Signatus Shell Dweller (Neolamprologus signatus)

Signatus Shell Dweller is a small, behaviour-rich Lake Tanganyika cichlid currently accepted as Neolamprologus signatus. Many scientific databases, aquarium books and trade lists still use the original combination Lamprologus signatus; both names refer to the same species on this page. Its slim barred body, large eye and close association with the lake floor make it distinctive, but the familiar "shell dweller" label needs one important qualification: natural evidence links this fish strongly with soft mud and excavated holes, and research treats shell use as facultative rather than obligatory.

Build the aquarium around fine sand, several safe shells and narrow burrow-like retreats, not around a bare row of decorative shells. Keep the water hard, alkaline and stable at 24-27°C, provide mature filtration and useful gas exchange, and feed small animal-rich foods that reach the lower territory. Although adults remain compact, they defend the area around a chosen retreat. Floor dimensions, visual separation and a plan for incompatible fish matter more than a small litre figure.

Each quantity on this listing represents one unsexed fish in the selected dispatch-size option. It is not a male-female pair, bonded pair or breeding pair, and ordering two does not guarantee compatibility. The four protected gallery images are representative illustrations developed from a supplier reference. One scene contains two fish, but that image does not change the sale unit. The gallery does not show the exact individual supplied, and its planted or driftwood backgrounds are illustrative rather than exact Lake Tanganyika habitat reconstructions.

What is included with this listing?

The product option describes approximate dispatch size. One selected quantity means one live, unsexed Signatus Shell Dweller within that option when stock is available. It does not promise a mature male, mature female or a fish selected to match another animal already in the aquarium. Juvenile and subadult cichlids can change social behaviour as they mature, and size alone is not a reliable way to promise sex.

If two or more fish are ordered, they remain individually unsexed animals. They may not form a compatible pair, and two mature males or two incompatible individuals may need immediate separation. Choose more than one only if the aquarium has additional floor area, multiple separated retreats and a fully cycled spare tank or divider. The protected pricing:pair tag supports the site's multi-buy price presentation; it does not convert the product into a pair sale.

The current supplier record identifies the species and dispatch sizes but does not establish collection locality, sex, breeding status or whether a particular fish is wild caught or captive bred. This page therefore does not make those claims. If documented provenance is essential to your purchase, ask for evidence before ordering rather than inferring it from the species name or photographs.

Why do Neolamprologus signatus and Lamprologus signatus both appear?

Max Poll described the species as Lamprologus signatus in 1952 from Lake Tanganyika material associated with Moba. Eschmeyer's Catalog of Fishes currently accepts the combination Neolamprologus signatus. FishBase and NCBI continue to lead with Lamprologus signatus, with NCBI recording Neolamprologus signatus as a homotypic synonym. The disagreement is about generic placement, not about two different sale species.

The customer-facing title follows the current Catalog of Fishes treatment while this section preserves the name buyers will encounter in older books, supplier catalogues and search results. That gives both people and search systems a clear identity without repeating scientific names unnaturally. It also prevents advice for unrelated Neolamprologus or other shell dwellers from being pasted onto this fish simply because part of the name matches.

Common names need similar care. "Shell dweller" describes a broad ecological and aquarium group containing species with very different adult sizes, social systems and retreat use. Multi Shell-Dwellers form conspicuous shell-bed colonies, while some ocellatus-group fish defend individual shells strongly. Signatus belongs to a soft-mud, hole-associated group and can use shells, but it should not be treated as a smaller copy of every other shell-dwelling cichlid.

Name or label	How it is used here	Reason
Neolamprologus signatus	Current title and primary scientific identity	Current Eschmeyer Catalog of Fishes status
Lamprologus signatus	Widely used scientific combination	Original combination retained by FishBase, NCBI and much aquarium literature
Signatus Shell Dweller	Natural customer-facing common name	Recognisable UK hobby and search wording
Shell dweller	Group term only	Not all shell-dwelling cichlids share Signatus care or social behaviour

Natural habitat: soft mud, holes and optional shells

FishBase records this species from the central part of Lake Tanganyika and describes deep water over soft, muddy bottoms. The original type material was collected at depths from about 10 to 100 metres. Bills and Ribbink's ecological work places L. signatus with related sub-littoral mud-bottom hole dwellers. These records are a useful correction to the usual retail picture of a fish living only in a field of empty snail shells.

A peer-reviewed synthesis of Tanganyikan cichlid breeding classifies L. signatus as a substrate breeder that uses shells facultatively. In other words, a suitable shell can be accepted as a protected cavity, but the species is not restricted to shell use in the way an obligatory shell breeder is. The aquarium should offer a functional choice: several appropriately sized shells plus narrow, smooth, stable cave or tube alternatives that resemble a secure burrow entrance.

The substrate matters because these fish investigate and modify the lower territory. Use fine, smooth sand rather than sharp gravel. Avoid a deep unstable mud substitute in an aquarium; actual mud can create oxygen-poor pockets and make waste control difficult. The goal is to reproduce the function of the habitat - a soft floor, secure narrow retreats and separated territories - without importing avoidable water-quality risks.

Lake Tanganyika water is mineral rich and chemically stable. That supports hard, alkaline aquarium water with useful carbonate buffering. It does not justify rapidly dosing an occupied tank to a high pH. Measure the source water, prepare adjustments consistently and favour stability within a suitable range. A high pH combined with ammonia is especially dangerous, so cycling and waste control remain central.

Appearance, adult size and sex differences

Signatus has a slim, laterally compressed body compared with many deep-bodied cichlids. The supplier reference and protected gallery show a pale bronze-to-silver fish crossed by fine darker bars, with a large reflective eye, a long dorsal fin and delicate blue-white detail in the lower fins. Colour and contrast change with age, sex, stress, lighting, background and camera processing. A newly transported fish may appear much paler than a settled display animal.

FishBase records a maximum of about 5.5 cm total length for male or unsexed specimens and about 3.5 cm total length for females. These values support a strong adult size difference, but they do not allow a retailer to sex every juvenile from dispatch length. A 4-5 cm option is not automatically a male, and a smaller option is not automatically a female. Individual growth, age and measurement method also matter.

Plan the permanent aquarium for the larger published figure even when buying the smallest option. A juvenile still needs mature filtration, suitable water and adult territory space. Temporary confinement in a five-gallon or narrow desktop tank is not justified by dispatch size. Smaller animals can also be more vulnerable to a strong intake and competition from established fish, so protect equipment and confirm feeding.

Body condition deserves more attention than maximum colour. A healthy fish should breathe evenly, control its position, use a retreat, respond to appropriately sized food and maintain a smooth body profile. A hollow belly, persistent rapid respiration, clamped fins, white spots, wounds or a fish displaced from every shelter needs investigation. Do not use one enhanced gallery image as a diagnostic standard for colour or fin shape.

Tank size and stocking plans

For one fish or an already compatible pair in a species-focused layout, use an aquarium at least 60 cm long with a useful 30 cm or wider front-to-back footprint, normally around 54-60 litres or more. This is a conservative practical recommendation rather than a wild measurement. A tall tank with the same litres but a narrow base provides less useful territory and is not an equivalent choice.

An unsexed group used for pair formation needs more room. Start around 80 cm long and approximately 80 litres or more, then increase the footprint with group size. Provide more retreats than fish and keep a cycled separation tank ready. Once adults mature, extra males or incompatible animals may be excluded. Waiting for a stressed fish to "sort it out" can result in damaged fins, starvation or death.

Any Tanganyika community needs substantially more space than the species-only minimum. Use at least an 80 cm aquarium and preferably a larger footprint that can separate lower territories from open-water zones. Stocking must account for the adult size and behaviour of every species, not only Signatus. A small cichlid can still control a large share of the bottom when its chosen retreat sits in the centre of the aquarium.

Volume is only one part of suitability. Substrate and decor displace water, while territories consume floor area. Use the tank volume calculator for filled volume, then separately measure aquarium length, usable bottom area and the distance between retreats. The final plan must leave every fish a safe route to food and cover.

Stocking plan	Practical starting aquarium	Main caution
One Signatus	60 cm long, around 54-60 litres, full retreat layout	One fish still needs a mature specialist setup
Already compatible pair	60 cm long, with several retreats and separation options	Compatibility can change around breeding
Two unsexed sale fish	Prefer 80 cm and about 80 litres or more	They are not a guaranteed pair; a backup tank is essential
Unsexed juvenile group	80 cm or larger, expanded with group size	Extra adults may require permanent removal
Mixed Tanganyika community	Substantially larger than the species minimum	Use different habitat zones and avoid lower-territory competitors

Shells, burrows, sand and sight barriers

Offer several safe retreat types

Use clean, unpainted gastropod shells with smooth intact lips, plus narrow ceramic caves or inert tubes that allow the fish to enter and turn safely. Shell openings and cave dimensions must match the selected fish while allowing for growth. Avoid varnished decorations, metal, sharp broken shells and porous materials of unknown origin.

For one fish, provide at least three credible retreat choices. For more than one, provide several per fish and distribute them into separated zones. A pile of ten shells in one corner may still function as one territory controlled by one animal. Spread options across the footprint and interrupt direct lines of sight with low rock, robust plants or other stable decor.

Use fine sand and secure heavy objects

Choose fine aquarium sand that can be moved without cutting the mouth or gill area. A practical depth of a few centimetres allows excavation without creating an unnecessarily deep waste trap. Place heavy rocks on a stable base before adding loose substrate, so digging cannot undermine them. Do not keep rebuilding the fish's arrangement simply because a shell has been turned or sand has been moved.

Keep the lower zone clean but not sterile

Siphon open areas and remove trapped food, but work gently around an occupied retreat. Never lift a shell to check whether a fish has spawned. Arrange the layout so you can inspect entrances and reach waste without collapsing every territory at each water change. A mature aquarium should be biologically stable, not dirty.

Plants are optional

Hard-water-tolerant plants can be attached to rocks or kept away from the main digging zones. They may help break sight lines, but they do not replace shells, burrow alternatives or stable chemistry. The planted gallery scenes show an attractive illustrative context; they are not a claim that a soft-water planted community is suitable or that this species needs lush vegetation.

Water chemistry, temperature and oxygen

For this stock, use a practical temperature of 24-27°C. FishBase reports 24-28°C, while the supplier record gives 24-27°C, so the narrower stock range is a sensible everyday target. Around 25-26°C works well when stable. Monitor the actual water with a reliable thermometer rather than trusting the heater dial alone.

Maintain hard alkaline water, practically around pH 7.8-9.0 and approximately 10-20 dGH, with enough carbonate hardness to prevent abrupt pH decline. The supplier data, FishBase records and specialist aquarium guidance span somewhat different ranges. This page therefore presents a stable working range rather than pretending there is one scientifically measured aquarium optimum.

Do not chase pH with repeated unmeasured additions. Test tap water and the aquarium, then use a repeatable remineralisation or buffering method where necessary. The water parameter matcher can help compare source water with the planned range, but it cannot replace accurate test kits or a controlled preparation routine.

Ammonia and nitrite must remain at zero. At alkaline pH, a greater proportion of total ammonia can exist in the more toxic un-ionised form, making an uncycled or overfed aquarium especially dangerous. Track nitrate as a trend and adjust stocking, feeding and water changes to the actual system. No single nitrate number compensates for ammonia, nitrite, oxygen shortage or social stress.

Provide useful gas exchange through surface movement and circulation. Warm water holds less oxygen, and rich small foods can raise biological demand when left to decay. Direct flow across the tank without blasting into every retreat. During hot weather or a power interruption, monitor temperature and breathing, increase safe aeration and follow a prepared outage plan rather than making a sudden cold-water change.

Cycling, filtration and routine maintenance

Cycle the aquarium before ordering. A calendar statement such as "running for four weeks" does not prove readiness; measured processing of an ammonia source and stable zero ammonia and nitrite do. The nitrogen cycle tracker can organise test results. Add the sand, shelters and filter arrangement before livestock so the physical layout can be tested without disturbing a newly arrived fish.

A mature sponge, internal or external filter can work if it provides biological capacity, reliable circulation and a fish-safe intake. Cover or reduce intake risk for the smallest option. Aim the outlet across the surface or along an open route rather than directly into the only occupied shell. Keep at least one calmer retreat while avoiding stagnant areas where food accumulates.

Clean mechanical media when flow falls, but preserve mature biological media. Do not replace every cartridge or wash all media under chlorinated tap water on a fixed schedule. Rinse reusable media appropriately in removed aquarium water where suitable, keep it wet during maintenance and restore circulation promptly.

Start with a measured partial water change each week, often around 20-30%, then adjust from nitrate trend, feeding and stocking. Match replacement water for temperature and mineral content. Siphon accessible sand gently, remove uneaten food and inspect shelter entrances without lifting occupied retreats. Count every fish and check body condition before and after maintenance.

Check	Useful routine	Reason
Fish count and body condition	At every feed and before maintenance	A hidden or excluded fish can lose weight quickly
Ammonia and nitrite	Before stocking, after stocking and whenever behaviour changes	Both should remain zero
pH, hardness and temperature	At setup, after source-water changes and on a consistent schedule	Detects drift before it becomes a sudden correction
Filter flow and surface movement	Daily visual check	Blockage and power problems can reduce oxygen rapidly
Sand and retreat entrances	During each water change	Food can decay out of sight around the lower territory
Backup tank or divider	Keep cycled and ready when housing more than one	Territorial exclusion requires a prompt response

What does a Signatus Shell Dweller eat?

FishBase records small shrimp as natural food, supporting a micro-predatory feeding plan. In the aquarium, use a high-quality complete micro pellet or small cichlid granule as a reliable nutritional base. Add varied appropriately sized foods such as frozen cyclops, daphnia, Artemia and other trusted small invertebrate foods. The particle must fit the fish's mouth and reach the lower territory without disappearing into the substrate.

This is not an algae eater, detritus cleaner or snail-control fish. It should not be expected to live on plant residue or food missed by other fish. A complete prepared staple helps avoid the nutritional gaps of an all-frozen menu, while varied small prey-style foods support natural feeding behaviour. Do not use feeder fish or uncontrolled wild-caught foods that introduce avoidable parasites and nutritional imbalance.

Feed small measured portions once or twice daily, adjusting for size, temperature and body condition. Food should be cleared promptly. In a group, spread the feed across more than one territory and confirm that the least dominant fish eats. More food poured into one spot may strengthen the dominant fish while fouling the shelter of the subordinate animal.

New fish may take time to feed openly. Offer a small familiar food near a safe entrance after settling, keep lighting subdued and observe from a distance. Persistent refusal, spitting, weight loss or a hollow belly needs investigation. Test water, check aggression and review food size before escalating to medication.

Food type	Role	How to use it
Complete micro cichlid pellet or granule	Nutritionally balanced staple	Choose a particle every fish can swallow
Frozen cyclops or daphnia	Small-prey variety	Thaw appropriately and offer a modest portion
Artemia	Variety for adults; nauplii for suitable fry	Rinse or prepare appropriately and avoid excess
Other trusted small invertebrate foods	Behavioural and dietary rotation	Match source, cleanliness and particle size to the fish
Large pellets or rich food left in shells	Waste risk	Avoid; remove anything not eaten promptly
Algae, leftovers or feeder fish	Not an appropriate diet plan	Do not use as a staple or reason to buy the species

Territory, normal behaviour and warning signs

A settled Signatus may hover close to the bottom, inspect entrances, move sand, retreat rapidly and patrol a compact area. Brief displays or a short chase from a chosen shelter can be normal cichlid boundary behaviour. The fish is not a schooling species, so keeping one is a valid choice. A single animal still benefits from a complex environment and should not be isolated in a bare holding box long term.

Normal territoriality becomes a welfare problem when one fish controls every retreat or pursues another across the entire aquarium. A subordinate fish trapped at the surface, behind the filter or in an upper corner has lost access to the intended habitat. Torn fins, mouth damage, repeated biting, refusal to feed and rapid weight loss require action. Add a divider or move a fish to the prepared cycled aquarium before serious injury occurs.

Do not assume that two fish are bonding because they occupy the same small area. They may simply lack alternatives. Positive compatibility means both animals can feed, rest and use a retreat without persistent pursuit. Social relationships can also change as fish mature or begin breeding, so continue observing an apparently settled pair.

Changes in water can mimic or worsen social problems. Rapid breathing, surface hovering and loss of appetite should trigger immediate ammonia, nitrite, temperature and oxygen checks as well as an aggression review. Medication cannot correct an excluded fish, an ammonia reading or a blocked filter.

Tank mates and species-focused keeping

A species-focused aquarium is the safest and clearest way to keep Signatus. It lets the keeper control feeding, watch every retreat and respond to pair formation without another bottom species crossing the territory continually. Small adult size does not make this a general nano-community fish; its hard alkaline water alone rules out many popular soft-water combinations.

In a substantially larger aquarium, peaceful Tanganyika fish that spend most of their time in open or upper water may be considered if temperature, pH and hardness overlap. The layout must create separate habitat zones and allow each fish to escape view. Compatibility should be judged from the actual adult stock, not from a chart that treats every Lake Tanganyika cichlid as interchangeable.

Avoid other shell dwellers or lower-territory cichlids in a minimum tank. They compete directly for the same substrate and entrances. Avoid boisterous Malawi cichlids, large predators, persistent fin or body pickers and fish that need soft acidic water. Synodontis and sand-dwelling Tanganyikans can also cross the lower zone repeatedly; they are not automatic companions simply because they come from the same lake.

This fish should not be sold as shrimp safe. Small crustaceans fit its natural feeding profile, so shrimp, shrimplets and eggs cannot be guaranteed. Ordinary community tetras are also a poor default recommendation because many prefer different chemistry. A species with genuinely compatible hard-water needs might work in a large planned aquarium, but the correct question is about the exact fish and layout, not "all tetras" as a group.

The tank mate compatibility checker can help compare broad requirements, but it cannot see the physical territory map, sex ratio or behaviour in your aquarium. Use it as a screening step, then apply the species-specific cautions above.

Potential companion	Assessment	Reason
Another Signatus	Possible with planning	Unsexed fish may be incompatible; use more floor space and a backup tank
Peaceful upper-water Tanganyika fish	Possible in a much larger aquarium	Only where chemistry overlaps and lower territories remain undisturbed
Other shell or bottom cichlids	Avoid in the minimum aquarium	Direct competition for retreats and substrate
Malawi cichlids	Avoid	Boisterous behaviour and incompatible social planning
Soft-water community fish	Avoid as a default	Conflicting chemistry and a poor compromise for both species
Shrimp or shrimp breeding colony	Not shrimp safe	Small crustaceans and young cannot be guaranteed safe
Large predatory fish	Avoid	Predation and chronic stress risk

Breeding without a pair promise

Comparative cichlid research lists L. signatus among facultative shell breeders. A compatible mature pair may use a shell or narrow burrow-like cavity as a spawning site. Maternal guarding is predominant among the shell-breeding lamprologines reviewed in the same scientific synthesis. These are useful biological clues, not a guarantee that the unsexed sale fish will form a pair or breed.

Pair formation should be observed rather than assumed. An unsexed group requires more room and a plan to remove extra adults. Courtship may include increased digging, focused use of one retreat and stronger local defence. Do not lift a shell or dismantle a burrow to search for eggs. Sudden disturbance can expose a brood, trigger abandonment or change the social relationship.

Keep water and feeding stable during possible spawning. Perform gentle maintenance away from the selected entrance. If one partner is excluded, separate it promptly even if the fish previously tolerated each other. Breeding behaviour can make a marginal layout fail.

Once fry become free swimming, offer appropriately tiny foods such as freshly hatched Artemia nauplii, a trusted microworm culture or a suitable complete fry food. Feed very small portions only when water quality can be maintained. Protect filter intakes and remove uneaten food. A dedicated breeding project should have rearing space ready before spawning, because growing juveniles eventually increase territory and waste pressure.

Health, quarantine and early warning signs

Quarantine is strongly recommended when suitable facilities are available. Match the hard alkaline water, add a safe retreat and use mature filtration. A bare observation tank can make waste and external signs easier to see, but a cavity-associated fish still needs somewhere secure. Quarantine equipment should not return wet to the main aquarium without appropriate cleaning and disinfection.

Observe appetite, breathing, posture, skin, fins, waste and body condition. Normal hiding is expected, but a sudden change from the individual's pattern matters. Rapid gill movement, repeated flashing, white spots, a hollow belly, swollen abdomen, split fins, loss of balance or refusal of several familiar meals warrants investigation.

Test water before reaching for medication. Ammonia, nitrite, a pH shift, overheating, low oxygen or social exclusion can produce serious symptoms. Correcting the environment may be the first essential action. If disease remains possible, consult an experienced aquatic veterinarian or qualified fish-health professional. Avoid combining medicines or increasing temperature automatically without confirming that the treatment and chemistry are suitable for this species.

Observation	Possible cause	First checks
Fish remains near the surface or heater	Territorial exclusion, low oxygen or water irritation	Aggression, ammonia, nitrite, temperature and aeration
Rapid breathing	Water-quality problem, overheating, gill irritation or disease	Full water panel, filter flow and close physical observation
Hollow belly or missed meals	Competition, unsuitable food, transport stress or disease	Watch individual feeding and separate for diagnosis where needed
Torn fins or mouth damage	Territorial conflict or sharp decor	Separate aggression, inspect entrances and keep water clean
Persistent hiding after previously feeding openly	Social, environmental or health change	Count fish, inspect behaviour and test water before treatment

Delivery, arrival and acclimation

Prepare the aquarium before dispatch day. Confirm zero ammonia and nitrite, stable hard alkaline water, correct temperature, mature filter flow and several open retreats. Avoid a major rescape or filter clean immediately before arrival. Keep the room calm and the aquarium lights subdued.

Inspect the sealed bag on arrival and follow the current livestock instructions supplied with the order. Temperature equalisation and controlled transfer should be completed without unnecessarily prolonging exposure to transport water after the bag is opened. Do not pour transport water into the display. The acclimation timer and new-fish acclimation guide can help organise the process, but the shipment-specific instructions take priority.

After release, allow the fish to locate a retreat. It may remain hidden while it settles. Check that breathing becomes controlled and that no resident blocks every entrance. Offer a very small suitable food after the settling period, then remove anything ignored. Continue quiet observations over the first evening and test water after stocking.

Our live-fish delivery page explains the licensed livestock service, packing and current Live Arrival Guarantee process. The returns and livestock claims page contains the evidence and timing requirements. Read them before delivery so photographs or contact are not delayed if a genuine arrival problem occurs.

How to read the protected image gallery

The four gallery images are 1024 by 1024 representative illustrations developed from a private supplier reference. The fish form and barred trade appearance remain useful, but the images are not photographs of the exact animals in the current holding system.

The first and fourth scenes show one fish with sand, wood or a broad-leaved plant. Those are attractive aquarium contexts, not evidence that driftwood or plants replace the required mineral-rich water and retreat plan. The clean side view is useful for understanding the elongated body. None of the images is a measurement chart, and perspective can change apparent size and proportions.

The second scene contains two fish. It is not a photograph of a bonded pair and must not be used to infer sex or compatibility. Each sale quantity is still one unsexed fish.

Compare related shell-dwelling cichlids

Choose between shell-dwelling cichlids by adult behaviour and habitat, not by the shared common-name phrase. The links below lead to currently public product pages, but stock and size availability can change. Review each species page separately and do not mix them in a minimum aquarium.

Related fish	Useful distinction	Reason to compare
Meleagris Shell-Dweller	A separately identified spotted shell-brooding cichlid with stronger classic shell-territory planning	Compare adult size, social structure and retreat spacing
Blue Ocellated Shell-Dweller	An ocellatus-type fish that should not be confused with Signatus	Compare shell defence and species-specific aquarium needs
Ocellated Shell-Dweller	A different Lake Tanganyika cichlid sold under similar broad wording	Use the scientific identity to avoid importing the wrong care
Multi Shell-Dweller	A colonial shell-bed species commonly chosen for visible group behaviour	Compare colony expectations with Signatus pair-oriented territory
Brevis Shell-Dweller	A separate pair-oriented shell dweller with its own size and shell use	Compare pair planning and retreat requirements

Browse the Lake Tanganyika cichlid collection for the current range. A shared lake of origin does not prove compatibility. Review temperature, chemistry, adult size, diet and occupied tank zone for every candidate before choosing a community.

Buying a Signatus Shell Dweller online in the UK

This listing is suitable for a keeper who can maintain stable hard alkaline water, provide fine sand and several retreat types, feed small animal-rich foods and respond quickly to territorial exclusion. It is less suitable for a new uncycled aquarium, a soft-water community, a five-gallon desktop tank, a shrimp-breeding display or an owner who cannot separate incompatible fish.

Before checkout, confirm the live dispatch-size option, current inventory and aquarium measurements. Do not choose the smallest size as a way to postpone adult planning. Make sure each retreat entrance is suitable for the selected fish and add larger alternatives before growth makes the original shelter tight.

WELCOME10 may provide 10% off an eligible first order; checkout confirms whether the promotion applies. Live Arrival Guarantee coverage depends on the current delivery and claim terms. These customer benefits are useful purchase information, but they do not replace husbandry preparation or allow the page to promise availability when live Shopify inventory changes.

Frequently asked questions

Is the correct name Neolamprologus signatus or Lamprologus signatus?

Eschmeyer's Catalog of Fishes currently accepts Neolamprologus signatus. FishBase and NCBI continue to use Lamprologus signatus, the original combination. They refer to the same species on this listing, so both names are retained for transparent identification.

How large does a Signatus Shell Dweller grow?

FishBase reports about 5.5 cm total length for male or unsexed fish and about 3.5 cm total length for females. Plan the aquarium around the larger figure. Dispatch size does not guarantee sex or final adult length.

What tank size does Signatus need?

Use at least a 60 cm-long aquarium of roughly 54-60 litres for one fish or an already compatible pair in a species-focused setup. Prefer 80 cm and about 80 litres or more for two unsexed fish or a group, with several separated retreats and a cycled backup tank.

Is Signatus an obligatory shell dweller?

No. Scientific reviews classify it as a facultative shell breeder, while natural records emphasise deep soft-mud habitat and hole use. Offer several shells plus narrow safe burrow or cave alternatives rather than forcing the fish to use one decorative shell.

How many shells should I provide?

Provide at least three credible retreat choices for one fish and several per fish for a group. Spread them across the floor with sight barriers. A large pile in one corner can still become one territory controlled by a dominant animal.

What water does N. signatus need?

Use stable hard alkaline water at 24-27°C, practical pH around 7.8-9.0 and approximately 10-20 dGH. Maintain useful buffering and good gas exchange. Ammonia and nitrite must remain at zero.

What does a Signatus Shell Dweller eat?

Use a complete small cichlid pellet or granule with varied cyclops, daphnia, Artemia and similar appropriately sized foods. FishBase records small shrimp as natural prey. This is not an algae eater, clean-up fish or animal that should live on leftovers.

Can I keep one Signatus on its own?

Yes. It is not a schooling fish, and one animal is a valid long-term choice when the aquarium is complex and suitable. A single fish still needs several retreat options, mature filtration and deliberate feeding.

Does ordering two give me a pair?

No. Each quantity is one unsexed fish. Two are not guaranteed to be one male and one female, compatible or mature. The two-fish gallery scene is representative and does not change the sale unit.

Can Signatus live with other shell dwellers?

Not in the minimum aquarium. Similar lower-territory cichlids compete directly for shells, burrows and feeding space. A specialist may plan separate territories in a much larger display, but a species-focused setup is the safer recommendation.

Can it live with shrimp or tetras?

Do not treat it as shrimp safe because small crustaceans fit the natural diet. Typical soft-water tetras are also a poor default match for Tanganyika chemistry. Only consider an exact upper-water species in a much larger aquarium when water and behaviour genuinely overlap.

How long does a Signatus Shell Dweller live?

A defensible species-specific lifespan figure was not established by the primary and authoritative sources reviewed for this page. The previous eight-year certainty has therefore been removed. Treat the fish as a long-term specialist commitment without inventing a countdown.

Are the gallery images the exact fish supplied?

No. They are four protected representative illustrations developed from a supplier reference. Individual colour, pattern, size, sex and condition vary, and planted or driftwood backgrounds are illustrative rather than exact habitat claims.

Is the fish wild caught or captive bred?

The current supplier record does not establish that provenance or a named locality. This listing therefore claims neither. Ask for documented origin before ordering if captive-bred status or locality is essential to the decision.

Sources and evidence

• Eschmeyer's Catalog of Fishes for the current accepted name, original combination, type locality and nomenclatural history.
• FishBase species summary for central Lake Tanganyika distribution, deep soft-mud habitat, temperature, hardness, published total lengths and small-shrimp feeding.
• NCBI Taxonomy for the cross-reference between Lamprologus signatus and Neolamprologus signatus.
• Bills and Ribbink's rediagnosis and ecological study for the soft-mud, hole-dwelling context of the signatus group.
• Mating and Parental Care in Lake Tanganyika's Cichlids for the facultative shell-breeder classification and shell-breeding parental-care context.
• Fishkeeper specialist profile for aquarium cross-checks around sand, hard alkaline water, retreat provision and larger-community caution.

Evidence boundary: the sources support species identity, natural ecology and conservative husbandry planning. They do not establish the sex, age, compatibility, breeding status, exact adult size, provenance or future appearance of an individual sale fish. Shopify inventory and checkout remain authoritative for live price, stock, size availability, delivery eligibility and promotion acceptance.