Meleagris Shell-Dweller (Neolamprologus stappersi)

Meleagris Shell-Dweller (Neolamprologus stappersi) is a spotted Lake Tanganyika cichlid that claims empty snail shells as shelter and breeding territory. It is still widely traded under the later name Lamprologus meleagris, which appears in FishBase and older aquarium literature. Current Eschmeyer Catalog of Fishes treatment places that name in synonymy with N. stappersi.

This is not the striped Multi Shell-Dweller, Neolamprologus multifasciatus. The present fish has pearl-like spots across the brown body and fins and a different social plan. It can be fiercely territorial around shells, adult males may reach about 7 cm total length, and a proven pair or carefully planned harem needs more floor area than a casual nano colony.

Care at a glance

Current catalog name	Neolamprologus stappersi (Pellegrin, 1927)
Common trade names	Meleagris Shell-Dweller, Pearly Shell-Dweller, Pearly Ocellatus
Familiar synonym	Lamprologus meleagris Buescher, 1991
Family	Cichlidae
Natural range	Lake Tanganyika near Bwassa, Democratic Republic of the Congo
Published maximum	7 cm total length for male or unsexed fish
Practical aquarium	60-80 L with a 60 x 40 cm footprint for a proven pair; about 100 L+ for a harem
Temperature	24-28 C
Practical pH	7.8-9.0
Practical hardness	10-20 dGH with useful carbonate buffering
Temperament	Territorial and semi-aggressive, especially toward similar bottom fish
Diet	Small carnivorous foods; natural records emphasise insect larvae
Breeding	Shell brooder; female uses the shell and the male fertilises from the entrance

Volume alone does not describe a suitable shell-dweller aquarium. The footprint must contain distinct shell territories, sand and visual barriers while leaving enough open water for every fish to retreat. A tall 60-litre tank with a narrow base can be less useful than a lower aquarium of the same volume.

Taxonomy and why two scientific names appear

Lamprologus meleagris was described by Heinz Buescher in 1991 from material near Bwassa. More recent Catalog of Fishes treatment considers it the same species as the earlier Neolamprologus stappersi, described by Pellegrin in 1927, so the older species name has priority. FishBase continues to present L. meleagris as valid, which explains why retailers and breeders still use it.

The honest approach is to show both. This listing uses Neolamprologus stappersi as the current catalog identity and retains Lamprologus meleagris as the recognised trade synonym. Neither name should be replaced with N. multifasciatus; that is a different striped colonial shell dweller.

Name	How it is used here	Reason
Neolamprologus stappersi	Current title identity	Current Eschmeyer Catalog of Fishes status
Lamprologus meleagris	Trade synonym	FishBase and aquarium trade still use it
Neolamprologus multifasciatus	Comparison species only	Striped colonial shell dweller, not this product

Appearance and photo identity

The characteristic look is a brown to bronze body scattered with pale pearl-like spots. Similar spotting extends into the dorsal, anal and caudal fins. The head is relatively large, the mouth is built for taking small animal prey, and the eye stands out strongly against the darker face.

The four product images show that spotted pattern rather than the narrow vertical barring associated with multies. Lighting, stress, age, sex and background change contrast, so each fish will not match every dot in a photograph. Juveniles may arrive paler and develop stronger pattern as they settle.

Dispatch sizes and adult planning

The size selector describes approximate dispatch length. The 2.5-3 cm and 3-4 cm choices are both juvenile or subadult stages and still need the complete adult aquarium. A smaller fish is not suitable for a temporary jar or an uncycled nano tank.

FishBase gives a maximum of 7 cm total length. Males are generally larger and females smaller, but juveniles cannot always be sexed reliably. Size at dispatch is not a promise of sex, pair formation or final adult length.

Stage	What the keeper may see	Planning priority
2.5-3 cm	Small body, developing spots and uncertain sex	Fine food, protected intake and full adult setup
3-4 cm	Stronger pattern and early territorial behaviour	Multiple shells and separation options
Maturing female	Closer attachment to a chosen shell	Safe shell opening and protected territory
Maturing male	Larger body and wider defended area	More floor space; may not fit inside the shell

Natural range near Bwassa

FishBase records the meleagris taxon only from Lake Tanganyika near Bwassa on the Democratic Republic of the Congo shore. This restricted locality matters: it is a Tanganyikan specialist, not a generic African cichlid that can be mixed with any hard-water species.

The fish is recorded in low-density shell areas rather than the enormous continuous shell beds associated with colonial multies. Empty gastropod shells provide shelter and breeding chambers, while open sand separates territories. The aquarium should copy the functional arrangement rather than turning the base into an ornamental pile with no boundaries.

Low-density shell habitat

Use separated shell clusters over fine sand. Each female or juvenile needs access to a suitable shell, with extras so a dominant fish cannot control the only safe refuge. Rocks, hardy plants or low barriers can break direct lines of sight between clusters.

More shells are not automatically better if they are packed so tightly that one male can patrol every entrance. Spread them across the useful floor and leave retreat routes. The keeper should be able to observe entrances and siphon open areas without collapsing the territories at every water change.

Aquarium dimensions and minimum size

Use a 60 x 40 cm footprint and roughly 60-80 litres as the conservative minimum for a proven compatible pair. For one male with two or three females, use an 80 cm aquarium of about 100 litres or larger. More space is needed if sex is uncertain or any tank mates are considered.

A 40-litre or 38-litre aquarium is not a reliable long-term recommendation for this species. It may hold a juvenile temporarily, but aggression can leave a subordinate fish with nowhere to escape. Use the tank-volume tool to calculate filled volume, then judge the actual floor dimensions after rocks and shells are installed.

Stocking plan	Practical starting aquarium	Main caution
Single fish	60 L with full shell habitat	Sex and later pairing plan remain unresolved
Proven pair	60-80 L, about 60 x 40 cm base	Pair compatibility still requires observation
One male, two or three females	About 100 L+ and 80 cm long	Separate female shell territories
Unsexed juvenile group	100 L+ with divider or spare tank ready	Extra males may need removal
Mixed Tanganyika display	120 cm and substantially larger volume	Only different habitat zones with escape space

Pair, harem or juvenile group?

A proven pair is the simplest plan in the minimum aquarium. In a larger footprint, one male may defend an area containing several female shell territories. This harem structure is different from the multigenerational colony associated with N. multifasciatus.

Retail juveniles may not be sexable. Buying several can improve the chance of obtaining both sexes, but it also creates a future aggression problem if multiple males mature. Do this only with enough floor space and a cycled separation aquarium. Never assume that every group will sort itself out without injury.

Recognising aggression

Short displays, flared fins and a quick chase away from a shell can be normal territory defence. Constant pursuit across the whole aquarium, mouth damage, torn fins, a fish trapped at the surface or refusal to feed is not acceptable. Move the victim or aggressor before serious injury occurs.

Behaviour	Assessment	Response
Brief chase from shell entrance	Normal boundary display may be occurring	Confirm the other fish has a safe territory
One fish controls every shell	Layout or sex ratio is failing	Add separation and be ready to remove fish
Subordinate hides behind heater	Serious displacement	Separate immediately and inspect injuries
Mouth locking or repeated biting	Escalated conspecific aggression	Do not wait for the pair to settle itself
Female remains near one shell while feeding	Normal territory or breeding behaviour	Protect the area without overfeeding

Choosing safe shells

Use clean, unpainted gastropod shells that sink, have smooth edges and provide an opening large enough for the female. Escargot-style shells are commonly used. Avoid decorative shells coated with varnish, shells from polluted beaches, metal ornaments and anything with a sharp broken lip.

Provide at least two or three options for each fish, then distribute them into separated clusters. Rinse thoroughly and remove trapped air before placement. Do not glue a fish permanently into a fixed display; these cichlids move sand and may adjust the entrance themselves.

Fine sand and digging

Use fine, smooth sand deep enough for the fish to excavate around shells, usually around 3-5 cm in practical layouts. Gravel limits natural digging and can trap waste between shell clusters. Dark or very coarse material can also make observation difficult.

Place heavy rocks directly on a stable base before adding sand so digging cannot undermine them. Shells may be buried, uncovered or turned. That engineering is normal; repeatedly restoring the aquascape to the keeper's preferred arrangement removes the fish's main behavioural outlet.

Rocks, plants and sight barriers

Use a few stable rocks or hardy attached plants to separate territories, not a large rock wall that consumes all floor space. Anubias and Java fern can be attached outside the main shell field, while Vallisneria may work in protected areas if the chemistry suits it.

Plants are optional. The essentials are sand, safe shells, hard alkaline water and visual separation. Keep the front and feeding zones accessible so every fish can be counted and body condition can be checked.

Water chemistry

Maintain hard, alkaline water with a practical pH around 7.8-9.0 and hardness around 10-20 dGH. Carbonate hardness should provide useful buffering. Test the source water before purchase; many UK supplies are hard enough, while very soft regions may need a repeatable remineralisation plan.

Do not raise pH with an unmeasured handful of chemicals. A high number without buffering can fall rapidly, and abrupt chemistry change is more dangerous than a stable value near the lower practical end. The water matcher helps compare source water with the target range.

Ammonia	0 mg/L
Nitrite	0 mg/L
Nitrate	Controlled through stocking, feeding and measured water changes
Temperature	24-28 C
Practical pH	7.8-9.0
Practical hardness	10-20 dGH
Carbonate hardness	Enough to keep the chosen pH stable; measure rather than guess

Temperature and oxygen

FishBase gives 24-28 C. Around 25-26 C is a useful everyday target when the source and display aquariums are stable. Avoid daily swings and match replacement water closely.

Warm alkaline water still needs good oxygenation. Keep the surface moving without creating a jet that blows food away from the shell area. During hot weather, increase safe aeration, reduce unnecessary lighting heat and feed conservatively. Do not use loose ice or sudden cold water.

Cycling before the fish arrives

Use a fully cycled aquarium with mature biological media. A fixed four or six weeks does not prove readiness; measured conversion of ammonia and nitrite does. The cycle tracker can organise test results.

Add shells and rocks before livestock so the layout can be tested for stability. Confirm the filter does not uncover the sand or trap a juvenile against an intake. An uncycled emergency tank is not a safe answer when aggression begins, so prepare separation capacity in advance.

Filtration and flow

A mature sponge, internal or external filter can work. Choose capacity for the full adult group and direct the outlet across the surface rather than into one shell entrance. Cover intakes where the smallest size could be drawn in.

Clean mechanical media when flow falls and preserve biological media. Do not replace every cartridge on a calendar. Rinse reusable media in removed aquarium water where appropriate and never let mature media dry during maintenance.

Weekly maintenance

Start with a measured partial water change each week, often 20-30%, then adjust from nitrate, stocking and feeding. Match temperature, pH and hardness. Siphon accessible waste between shell clusters without plunging the siphon into an occupied breeding shell.

• Count every fish and check body weight before disturbing the tank.
• Test ammonia and nitrite whenever behaviour or appetite changes.
• Track nitrate to set the water-change schedule.
• Remove uneaten food from open sand.
• Check shell openings for trapped debris without lifting occupied shells casually.
• Clean the intake and confirm surface movement.
• Inspect dividers, lids and spare equipment.

Natural diet

FishBase describes a greedy feeder that takes mainly insect larvae. In the aquarium, use small quality carnivore or Tanganyika cichlid granules as the base, with frozen cyclops, daphnia, Artemia, mysis and suitable insect larvae for variety.

Food must reach the lower territory without being buried. Use small sinking or slow-sinking particles and spread them across more than one shell cluster. The larger male should not intercept every piece before females and juveniles can feed.

Food	Role	Use
Small complete carnivore granule	Reliable nutritional base	Choose a particle all sizes can swallow
Frozen cyclops or daphnia	Small-prey variety	Thaw and offer modest portions
Artemia	Adult enrichment and fry food by size	Use nauplii for small fry
Mysis	Meaty variety	Chop where needed and avoid excess
Trusted insect larvae	Matches natural prey type	Use as rotation, not an uncontrolled staple
Feeder fish or mammal meat	Unnecessary	Avoid parasite risk and unsuitable nutrition

Portion control and body condition

Feed once or twice daily in portions cleared promptly. There is no universal pinch because particle density and fish size differ. Watch the slowest female or smallest juvenile, then adjust the next meal rather than adding a second large portion immediately.

A healthy fish should have a smooth body profile without a hollow belly or persistent swelling. Weight loss despite feeding, spitting food, white stringy faeces, isolation or rapid breathing needs investigation. Test water first and use a qualified aquatic veterinarian where possible.

Normal shell-oriented behaviour

Expect hovering near the bottom, short patrols, sand moving, shell inspection and rapid retreats. A settled female may spend long periods at one entrance. A male often patrols a wider area and displays with fins extended.

These fish do not school. Keeping several in view does not prove social comfort; each must have a usable territory. The most interesting display comes from boundaries, courtship and excavation, not from forcing a dense group into a small tank.

Breeding inside the shell

The female lays eggs inside a chosen shell. FishBase notes that a mature male may be too large to enter and fertilises from the opening. Eggs and early larvae remain hidden, so the first obvious sign may be a female guarding tightly or tiny fry appearing near the entrance.

Do not lift the shell to look for eggs. Keep water and feeding stable, protect the territory and observe from outside. A major rescape during courtship can end the attempt and trigger renewed aggression.

Fry care

Newly free-swimming fry need tiny foods such as freshly hatched Artemia nauplii, microworms or a reliable powdered fry food. Feed small amounts several times daily while protecting water quality. A sponge prefilter prevents fry from entering the intake.

Parents may defend fry, but a mixed aquarium adds predation risk and territorial pressure. Move fry only with matched water and a cycled grow-out tank. Keep identity records and do not distribute offspring as another shell-dweller species.

Species-only aquarium

A species-only setup is the safest and most rewarding plan for a pair or harem. It lets the keeper manage shells, sex ratio, feeding and fry without another bottom fish entering the territory. It also makes subtle aggression easier to see.

Do not interpret species-only as empty. Sand engineering, courtship and fry provide continual behaviour. Add visual barriers and a simple background rather than filling the aquarium with incompatible fish for movement.

Tank mates in a larger Tanganyika aquarium

In a much larger 120 cm+ aquarium, peaceful open-water Tanganyikans may be possible because they use a different zone. A carefully planned Blue Neon Paracyprichromis group is a more logical comparison than a Malawi peacock, but it still needs its own group, rock cover and swimming volume.

Small Julidochromis such as the Masked Julie use rock territories and may work only where rock and shell zones are widely separated. Avoid other shell dwellers, sand sifters and bottom fish in the same small footprint. Use the tank-mates tool as an initial screen, then assess adult territories and water chemistry.

Companion type	Assessment	Condition
Same species	Pair or harem plan	Sex ratio, shell territories and removal capacity
Open-water Paracyprichromis/Cyprichromis	Possible in large aquarium	120 cm+, complete upper-water group and high oxygen
Small rock-dwelling Julie	Advanced only	Separate rock zone with no route into shell field
Other shell dwellers	Avoid	Direct competition for the same resource
Xenotilapia and other sand fish	Avoid in ordinary home setups	Compete for floor territory
Malawi cichlids or soft-water community fish	Avoid	Wrong behaviour, diet or water context

How it differs from a Multi Shell-Dweller

The Multi Shell-Dweller is a smaller striped species known for dense multigenerational colonies. Meleagris/stappersi is spotted, larger, more individually territorial and associated with lower-density shell habitat.

Do not copy a multi stocking plan. A 40-litre colony recommendation, wall-to-wall shell bed and expectation that many juveniles will coexist indefinitely are not safe assumptions here.

Comparing other shell dwellers

The Ocellated Shell-Dweller and Brevis Shell-Dweller have their own pair and territory patterns. Lamprologus speciosus is another close comparison, while Neolamprologus similis is closer to the colonial multi style.

Choice	Visual/social distinction	Planning note
Meleagris/stappersi	Pearl-spotted, pair or harem territories	60 x 40 cm base for pair; larger for harem
Multi	Fine vertical bars, colonial	Dense shell bed and colony management
Ocellatus	Bold eye/fin detail, pair or harem	Can be highly territorial
Brevis	Pair-oriented and often shares a shell pair area	Research form and adult size
Speciosus	Spotted/ornate close relative	Do not mix into the same shell field
Similis	Striped colonial fish	Different group and shell-density plan

Sex differences and the limits of juvenile sexing

Adult males are normally larger and broader, while females remain smaller and spend more time close to an occupied shell. Mature males can also show stronger fin extension and patrol a wider area. Those differences develop over time; they are not a dependable way to label every 2.5-4 cm juvenile.

Do not select the larger shop size and assume it is male, or the smaller size and assume it is female. Growth rate, age, feeding history and social status overlap. A retailer can describe approximate size and visible condition, but a guaranteed pair requires proven adult behaviour or specialist venting, neither of which should be inferred from a product option.

Clue	What it may suggest	Why it is not proof
Larger body in mature group	Male	Age and growth history differ
Persistent shell occupation	Female	Juveniles and stressed males also shelter
Wide patrol around several shells	Male territory	Dominant juveniles can patrol temporarily
Repeated courtship at one entrance	Possible compatible pair	Observation over time is still needed
Body size at dispatch	Developmental stage	Does not guarantee sex

Designing shell territories step by step

1. Mark the useful floor after the filter, heater and stable rockwork are installed.
2. Create two or more sand zones separated by a rock, plant or open gap.
3. Place several shells in each zone with entrances facing different directions.
4. Leave a clear route from every cluster to cover away from the dominant fish.
5. Keep a feeding lane where particles can reach each territory.
6. Photograph the layout before fish arrive so later digging can be understood.
7. Watch which shells are chosen before adding or moving more.

A good layout gives the fish choices without making the aquarium impossible to clean. If every shell touches the next one, territories can overlap. If clusters are isolated in corners with no retreat, a subordinate may still be trapped. Adjust barriers from observed chasing, not from symmetry.

Preparing soft source water safely

Very soft tap water may lack both the general hardness and carbonate buffering needed for a stable Tanganyika aquarium. Start by testing tap pH, GH and KH on several days. Then choose one repeatable method, such as a measured commercial remineraliser or a carefully tested mix with mineral media, and prepare replacement water outside the aquarium.

Crushed coral or aragonite can add buffering, but the effect depends on existing chemistry, water movement and contact time. It is not an instant dose. Commercial salts also vary, so follow the product instructions and verify the resulting water with tests. Record the quantity used per bucket to avoid a different chemistry at every water change.

Source-water result	Meaning	Action
pH and hardness already stable in range	No correction may be needed	Use conditioned tap water consistently
Moderate GH but very low KH	pH may have little buffering	Choose a measured carbonate strategy
Very soft water	GH and KH both need planning	Prepare a repeatable remineralised mix
Hard water with high nitrate	Minerals are suitable but pollution is not	Address source nitrate; hardness alone is not quality
Large day-to-day pH change	Testing or buffering problem	Resolve before livestock arrives

Evaporation and mineral concentration

Evaporation removes water but leaves minerals behind. Repeatedly topping up hard water can therefore raise dissolved solids over time even if pH looks stable. Top-up restores volume; it does not replace a partial water change or remove nitrate.

Measure GH, KH and nitrate periodically, especially during summer when fans increase evaporation. Use a consistent top-up source appropriate to the aquarium's chemistry. Never add a full water-change dose of mineral salts to the display simply because the water level has fallen.

Power cuts, filter stops and heatwaves

During a power cut, oxygen becomes the immediate concern. Stop feeding, keep the lid in place, preserve temperature and agitate the surface safely if the outage continues. Do not open an external filter after a long stagnant period and pour foul water back into the aquarium; inspect and clean it before restart.

After power returns, check temperature, breathing, ammonia, nitrite and filter flow. A mature filter can lose oxygen quickly when stationary. Restore circulation gently and keep feeding light until tests confirm stability.

In a heatwave, room cooling, safe surface movement and reduced lighting are preferable to sudden chilling. Warm water carries less oxygen and increases metabolism. If the aquarium reaches the upper range, increase aeration and watch every fish rather than trying to force an immediate multi-degree drop.

Common myths corrected

Myth	Better guidance
All shell dwellers can share the same nano care sheet	Species differ in adult size, aggression, pair structure and shell density
This is just a spotted Multi Shell-Dweller	It is the stappersi/meleagris taxon with a different social system
Forty litres is enough for a colony	Use 60-80 L for a proven pair and around 100 L+ for a harem
Many shells prevent all fighting	Floor area, barriers, sex ratio and removal capacity also matter
A high pH number proves Tanganyika water	GH, KH, stability, nitrate and source preparation all matter
Small fish are beginner community fish	They are specialised territorial cichlids requiring deliberate care

First-month observation plan

Days one to three

Keep lights subdued, feed lightly and confirm every fish can reach a shell. Test ammonia and nitrite daily. Watch breathing and ensure the filter outlet has not shifted sand into an entrance.

Days four to seven

Begin comparing feeding access and territory use. A fish that never leaves the surface or equipment corner is not simply shy. Add a visual barrier or separate it before damage accumulates.

Weeks two and three

Record which shells are occupied, the longest chases and each fish's body condition. Adjust food placement so the smallest animal receives a share. Check nitrate, pH, GH and KH before the first routine water change.

Week four

Decide whether the social plan is working. A stable pair or harem should allow every fish to feed and use a safe territory. If one male dominates the whole base, use the prepared separation aquarium rather than adding more fish as a distraction.

Health and warning signs

A healthy fish holds position confidently, feeds promptly and has open fins and steady breathing. Loss of appetite, a pinched belly, clamped fins, repeated flashing, surface hanging or isolation away from every shell needs attention.

Test ammonia, nitrite, nitrate, temperature and pH before adding medication. Check aggression and body condition. Similar signs can come from water, injury, parasites or internal disease, so random treatment may hide the cause or damage the biological filter.

Quarantine

Quarantine new fish for several weeks in a cycled aquarium with matching hard alkaline water, sand and at least one safe shell each. A bare tank without refuge can produce stress that looks like illness. Use dedicated nets and siphons.

Observe feeding, waste, breathing, fins and body weight. If several juveniles are quarantined together, provide enough territory and monitor aggression as closely as disease. Do not move a bullied fish into the display simply to end a quarantine fight.

Arrival and acclimation

Prepare the shell field before delivery. Keep lights low, compare bag and aquarium temperature, and follow a controlled acclimation appropriate to the chemistry difference. The acclimation timer can organise the process, but no universal duration replaces observation.

1. Inspect the sealed bag immediately and follow the live-arrival steps if there is a concern.
2. Equalise temperature without placing the bag under bright light.
3. Open only when ready to transfer; do not leave fish in opened shipping water for hours.
4. Where chemistry differs, add small amounts of aquarium water gradually for a short controlled period.
5. Transfer with as little shipping water as practical.
6. Release near open retreat routes, not directly into a dominant fish's shell.

First-week observation

It is normal for a new fish to hide, but each individual should begin exploring and feeding. Count them morning and evening, and confirm that one fish is not being held at the surface. Feed modestly while the filter responds to the added bioload.

Test ammonia and nitrite daily after a meaningful stocking increase. Check temperature and pH at the same time of day. Do not rearrange shells repeatedly to make the fish more visible.

Is this the right fish for your aquarium?

Choose it if you can provide hard alkaline water, fine sand, suitable shells, a wide footprint and a plan for territorial aggression. It rewards keepers who enjoy subtle behaviour, breeding and habitat design more than bright open-water colour.

Do not choose it for a soft-water community, a narrow 40-litre nano tank, an uncycled aquarium or a mixed collection of bottom cichlids. If you cannot separate surplus males, a single fish or a verified pair may be safer than an unsexed group.

Ordering and live-arrival support

Both listed size options require the same adult plan. Select the size that best matches the established fish, but do not expect sex or pair compatibility to be guaranteed from length alone. Read the delivery guidance and have the receiving aquarium ready before ordering.

Eligible livestock orders are covered by the published live-arrival guarantee. If there is a concern, follow the evidence and contact steps on the returns and live-arrival page immediately. First-time customers can use the active WELCOME10 offer for 10% off their first order, subject to the shop terms.

Frequently asked questions

Is Lamprologus meleagris the same as Neolamprologus stappersi?

Current Eschmeyer Catalog of Fishes treatment places L. meleagris in synonymy with N. stappersi. FishBase still lists the former separately, so both names remain common in the aquarium trade.

Is this Neolamprologus multifasciatus?

No. The Multi Shell-Dweller is a separate striped colonial species. This fish is spotted, grows larger and needs a pair or harem territory plan.

What aquarium size does a pair need?

Use a 60 x 40 cm footprint and roughly 60-80 litres as the conservative minimum for a proven pair. More space is needed for uncertain sex, a harem or tank mates.

How many shells should I provide?

Provide at least two or three suitable options for each fish and spread them into separated clusters. Every female needs a safe breeding shell and no dominant fish should control the only refuge.

Can I keep a juvenile group?

Only with a larger aquarium and a cycled separation plan. Sex may be uncertain, and surplus males can become dangerously aggressive as they mature.

What water does it need?

Use stable hard alkaline water around pH 7.8-9.0, 10-20 dGH and 24-28 C. Measure source water and change chemistry gradually.

What does it eat?

Natural records emphasise insect larvae. In aquariums, use small complete carnivore granules with frozen cyclops, daphnia, Artemia, mysis and suitable insect larvae.

Can it live with Malawi cichlids?

No ordinary mixed Malawi setup is recommended. The species has a specialised Tanganyika shell territory, different social plan and different compatible tank-mate choices.

How does it breed?

The female lays eggs inside a shell. A mature male may be too large to enter and fertilises from the opening. Fry remain protected inside before emerging near the shell.

Can it live in a normal community aquarium?

Not with soft-water tetras, guppies, Corydoras or random bottom fish. A species setup is safest; a large carefully zoned Tanganyika aquarium is the advanced alternative.

Evidence and responsible limits

Taxonomy follows Eschmeyer's Catalog of Fishes while retaining the FishBase/trade synonym. FishBase supports the Bwassa locality, 7 cm maximum, 24-28 C range, insect-larva diet, low-density shell habitat and shell-brooding behaviour. Practical aquarium recommendations are conservative husbandry guidance, not claims that every juvenile will form the intended pair.

For persistent illness, injury or unexplained deaths, use water tests and consult a qualified aquatic veterinarian or experienced Tanganyika specialist. The wider Lake Tanganyika cichlid range is useful for comparison, but do not treat every fish in the category as a compatible tank mate.

Related shell dwellers and care tools

Compare the Multi Shell-Dweller, Ocellated Shell-Dweller, Brevis Shell-Dweller, Lamprologus speciosus and Neolamprologus similis by adult social system, not only appearance. Before purchase, confirm volume with the tank-volume tool, source water with the water matcher, cycling with the cycle tracker and compatibility with the tank-mates tool.