Tembwe Butterfly Cichlid (Xenotilapia papilio)

Tembwe Butterfly Cichlid is the Tembwe locality form of Xenotilapia papilio, a small, specialised cichlid found only in Lake Tanganyika. It lives where rock gives way to sand, filters tiny food from sediment and forms adult pairs. The broad fins, poised movement and blue-yellow iridescence seen on settled fish explain the butterfly name, but this is not a general community cichlid. It needs a mature, hard-water aquarium with open fine sand, secure rock boundaries and calm companions.

This guide separates published species evidence from practical aquarium advice. FishBase records a maximum length of 7.8 cm, while aquarium and supplier sources often round a well-grown adult to about 8-10 cm. Adults are territorial with their own kind and usually pair, whereas subadults may occur in small groups. A juvenile group can therefore be a route to finding a compatible pair only when the keeper has enough floor space and a plan to separate fish that are excluded. The current size, availability and price are shown by the live product options above rather than being repeated in the description.

Identity, locality and naming

Xenotilapia papilio was described by Heinz Büscher in 1990. The species is endemic to the western shore of Lake Tanganyika in the Democratic Republic of the Congo, with its recorded range running between Tembwe Deux and Kanoni. Locality names matter in Tanganyika cichlids because geographically separated populations can differ in colour and pattern. This listing is for the Tembwe Butterfly Cichlid; it should be maintained and described as that locality rather than blended with Kanoni stock.

The word papilio means butterfly and refers to the fish's comparatively broad, expressive fins. It is sometimes called the Tanganyikan Butterfly Cichlid, but that common name can create confusion with unrelated West African butterfly cichlids or butterfly peacock cichlids. Searching and labelling with both Xenotilapia papilio and Tembwe gives the clearest identity. The accepted placement is family Cichlidae, subfamily Pseudocrenilabrinae, within the Lake Tanganyika tribe Ectodini.

Name on a listing	What it means	Use for this fish?
Tembwe Butterfly Cichlid	Clear English trade name tied to the locality	Yes
Xenotilapia papilio Tembwe	Species plus locality designation	Yes
X. papilio Kanoni	A different locality form from the same restricted range	No
African Butterfly Cichlid	An ambiguous common name used for unrelated cichlids	Avoid as the primary name
Sunflower Xenotilapia	A trade label used for other papilio-like populations	Do not substitute

Natural habitat: the rock-and-sand transition

FishBase places Xenotilapia papilio at depths of about 3-40 metres in deeper rocky habitat, especially where rock surfaces are covered by sand. This is not the featureless open-sand environment associated with some showy sand sifters, nor is it a cave-bound rock fish. It uses the transition between the two. In an aquarium, the closest useful interpretation is a broad area of fine sand beside a limited number of secure rock structures. Sand provides the feeding surface; rock creates shelter, boundaries and visual breaks.

The published diet helps explain that habitat choice. Wild fish take in sediment and filter it through the gills to extract small invertebrates. Recorded stomach contents include copepods, ostracods, insect larvae, filamentous algae and sand. A coarse or sharp substrate works against this natural behaviour and can abrade the mouth or gill area. Fine inert aquarium sand is therefore functional husbandry, not decoration.

Lake Tanganyika is unusually stable, alkaline and mineral-rich. The aquarium does not need a collection of chemical powders if the source water already meets the target, but it does need consistency. Test tap and tank water before changing chemistry. The water matcher can help compare the aquarium with the species range, while the tank volume calculator is useful for checking actual water volume after rock and substrate displacement.

Appearance, locality colour and sexing

Tembwe fish have a compact, laterally compressed body, relatively large dorsal and anal fins and an elegant hovering posture. Depending on mood, age, light and social status, the base colour can shift through beige, yellow and grey-brown, with dark vertical or irregular markings and blue iridescence on the body and fins. The appearance is subtle when a fish is newly moved and much stronger after it has settled into stable water.

Sexing by colour alone is unreliable. Published descriptions do not identify strong permanent sexual dimorphism, although mature females can appear fuller when carrying eggs and adult males may look more robust or develop slightly stronger finnage. A seller or keeper should not promise a sex from a single juvenile photograph. Observed pair behaviour, body shape at maturity and breeding history provide better evidence than one colour trait.

The existing gallery image is labelled naturally with the species and locality so Google Images and visual-search systems can connect it to the page context. It remains an illustrative aquarium image rather than a promise that every live fish will show identical colour on arrival. Stress, transport, hierarchy and lighting all affect immediate appearance.

Is this the right Tanganyika cichlid for your aquarium?

This species suits a keeper who already understands the nitrogen cycle, can hold hard alkaline water stable and is comfortable watching social behaviour closely. It rewards careful observation: a settled pair forages methodically, uses the sand-rock boundary and communicates through posture and fin display. It is less suitable for a first aquarium, a busy Malawi community or a tank where every species must compete aggressively at feeding time.

Your aquarium	Fit	Reason
Mature 100 cm or longer Tanganyika tank planned around a compatible pair	Good candidate	Provides the correct footprint, water and social focus.
Large Tanganyika community with calm open-water fish and separated territories	Possible with care	Needs generous floor space and tank mates that do not dominate feeding.
150-litre tank already full of rock-dwelling cichlids	Poor fit	Nominal volume does not compensate for missing sand or contested bottom area.
Malawi mbuna aquarium	Not recommended	Activity, aggression and diet are a poor match.
Soft-water tetra or ram community	Not suitable	The chemistry requirements conflict.
New or uncycled aquarium	Not suitable	Ammonia or nitrite exposure can quickly damage a specialist Tanganyika fish.

If the aquarium is still being planned, the care planner and cycle tracker provide a useful sequence for equipment, testing and stocking. They do not replace liquid testing, but they make it easier to spot an incomplete setup before livestock is added.

Tank size, footprint and territory

A 150-litre aquarium with a footprint of at least 100 cm is a sensible minimum for an established pair. Length and floor area matter more than height. Rockwork and sand reduce the actual water volume, and two tanks sold as 150 litres can provide very different usable territories. A deeper front-to-back dimension is especially valuable because it allows rock to be placed without turning the remaining sand into a narrow corridor.

A juvenile group needs more room than a pair, not less. Groups are sometimes recommended because young fish are difficult to sex and natural bonds can form as they mature. That approach is only responsible if the keeper can monitor exclusion and remove surplus fish. Once adults pair, aggression towards conspecifics can rise sharply. A bullied fish may stop feeding while still looking outwardly intact, so body condition and access to sand should be checked daily.

Stocking plan	Recommended starting footprint	Management note
Established compatible pair	100 cm long, 150 litres or more	Provide two retreats and an open feeding area.
Pair with calm mid-water Tanganyika fish	120 cm and 240 litres or more	Increase space and keep the lower zone lightly stocked.
Juvenile group to establish pairs	120-150 cm, depending on group size	Keep spare accommodation and remove excluded fish early.
Multiple adult pairs	Specialist large aquarium only	Requires substantial separated territories; not a routine home setup.

Use a tight-fitting lid. Sudden movement, chasing or work in the aquarium can make many sand-associated Tanganyika cichlids dart rapidly. Keep a clear gap around heater guards and filter intakes, and avoid narrow rock traps where a frightened fish could wedge itself.

Aquascaping a functional sand-rock transition

Start with fine, smooth sand laid deeply enough for natural mouthing but not so deep that unmanaged anaerobic pockets develop. Place the main rocks directly on a stable base before adding loose sand around them. This prevents a foraging fish from undermining a structure. Use two or more separated rock clusters rather than one continuous wall, and keep the front and central areas open.

Plants are optional. Most soft-water aquascaping plants are a poor match for the chemistry, but hardy epiphytes can sometimes be attached above the main feeding area if they tolerate the water. Do not fill the sand with rooted plants or ornaments simply to make the aquarium look busy. The negative space is part of the habitat.

Feature	Recommended	Avoid
Substrate	Fine, rounded inert sand	Sharp gravel, crushed material with abrasive edges
Rockwork	Stable clusters with visual breaks	Loose piles resting on diggable substrate
Open area	Broad continuous feeding surface	Narrow decorative strips of sand
Lighting	Moderate, predictable day cycle	Sudden switching or intense light without refuge
Flow	Good circulation and surface movement	A jet that continually lifts sand or pins fish to one zone
Plants	Optional hardy epiphytes above rock	Dense planting that removes the feeding area

Water chemistry, filtration and oxygen

A practical target is 24-27°C, pH 7.8-9.0 and roughly 10-25 dGH. The Petra supplier range overlaps this at 23-27°C, pH 7.5-8.5 and 12-30 dGH. Do not chase the extreme edge of any range. Choose a stable point that suits the source water and compatible livestock, then keep daily and weekly movement small. Ammonia and nitrite must remain at zero; nitrate should be kept low through stocking control, feeding discipline and regular water changes.

Use mature biological filtration with enough mechanical capture to remove fine waste without stripping the sand every day. Surface agitation matters because warm hard-water aquariums still need strong gas exchange. A canister filter, sump or well-sized internal system can all work when intake, return and maintenance are appropriate. Place the return so the full aquarium circulates while calm feeding areas remain.

Test	Working target	Action if outside target
Temperature	24-27°C, stable	Check heater accuracy with a separate thermometer; correct gradually.
pH	7.8-9.0 without sudden swings	Test source water and alkalinity before adding buffers.
General hardness	About 10-25 dGH	Use a measured mineral strategy only where source water requires it.
Ammonia	0 mg/L	Stop feeding, protect oxygen and perform appropriate conditioned water changes.
Nitrite	0 mg/L	Treat as an urgent filtration or cycling problem.
Nitrate	Low and stable	Review feeding, stocking, maintenance and replacement-water nitrate.

Match replacement water for temperature and chemistry before a water change. Routine changes of around 20-30% are often easier on a stable aquarium than occasional very large corrections, but the right schedule depends on measured nitrate, feeding and stock. Clean filter media in removed aquarium water or conditioned water as appropriate; never replace all mature biological media at once.

Natural feeding and an aquarium diet

In nature, Xenotilapia papilio filters sediment for small invertebrates. FishBase records copepods, ostracods and insect larvae alongside filamentous algae and sand in stomach contents. This is a small-particle feeder with an omnivorous component, not a large-food predator and not a dedicated algae grazer. Feed in a way that allows the pair to forage without being rushed by faster fish.

Use a high-quality fine sinking or slow-sinking granule as the staple. Add small frozen foods such as cyclops, daphnia, finely graded mysis or brine shrimp in rotation. Foods should be small enough to take without tearing. Several tiny portions are safer than one heavy meal, particularly in a species that searches the bottom and may continue finding leftovers after the visible feeding rush.

Food	Role	Frequency
Fine quality sinking granule	Balanced staple with consistent vitamins and minerals	Most days in small portions
Cyclops or daphnia	Small crustacean food close to natural prey size	Several times weekly
Brine shrimp or finely graded mysis	Variety and conditioning	In rotation, not as an excessive single-food diet
Fine spirulina-containing food	Modest plant and algal component	Part of a varied schedule
Large pellets or chunks	Poor match for mouth size and feeding method	Avoid
Mammal or bird meat	Inappropriate fat and tissue profile	Do not feed

Watch both fish eat. A dominant individual can intercept food without obvious fighting. Spread small portions across the open sand, but remove persistent leftovers. Loss of appetite is not automatically a disease: first check social exclusion, temperature, oxygen, ammonia, nitrite and whether the fish can reach food without crossing a defended boundary.

Pair behaviour, groups and territoriality

The old shorthand of “peaceful, keep 6+” is too simple. Published species accounts describe territorial adults that form pairs, while subadults live in small groups. In practical terms, a compatible pair is the normal long-term unit. Starting with juveniles can help a pair form, but it creates a management obligation. Once a bond develops, extra fish may be driven away and an aquarium has no distant shoreline for them to escape to.

Signs of a workable pair include shared use of the same general territory, feeding without one fish being continually displaced and courtship or coordinated defence without sustained damage. Warning signs include one fish confined behind equipment, pale colour combined with a hollow belly, repeated surface hovering, torn fins or refusal to cross the tank for food. Separate early rather than waiting for serious injury.

Tank mates and community planning

The safest design is species-focused. In a larger aquarium, calm Tanganyika fish that use a different level may be considered, provided they share the chemistry and do not overwhelm the pair at feeding. Avoid boisterous Malawi cichlids, aggressive bottom dwellers and multiple sand-sifting species competing for the same floor. Small ornamental shrimp are not appropriate.

Potential companion or alternative	Assessment	Planning note
Calm Cyprichromis in a large aquarium	Possible	Uses open mid-water, but needs its own group and enough swimming length.
Small Synodontis from Tanganyika	Caution	Can disturb feeding and breeding; assess floor-space overlap carefully.
Shell dwellers	Usually better as an alternative display	They also defend bottom territories and should not be crowded into 150 litres with this pair.
Julidochromis	Caution in a much larger structured tank	Rock territories can become assertive, especially during breeding.
Tropheus or Malawi mbuna	Avoid	Activity, aggression, feeding style and territory pressure are mismatched.
Soft-water community fish	Avoid	Water requirements conflict even when temperament seems calm.

Use the tank-mate checker as a first filter, then verify adult size, feeding zone, group requirement and breeding behaviour separately. Browse the Lake Tanganyika cichlid category to compare habitats. The Karilani Herring Cichlid illustrates the different open-water Cyprichromis body plan, while the Signatus Shell-Dweller is a better comparison for a separate shell-focused aquarium than an automatic tank mate.

Acclimation, quarantine and the first month

Prepare the aquarium before delivery. Confirm zero ammonia and nitrite, stable temperature and suitable pH, and switch off intense lighting before opening the transport box. Follow the acclimation instructions supplied with the order rather than extending the process unnecessarily. Transport water changes after a bag is opened, so a very long improvised drip can sometimes increase rather than reduce stress.

Quarantine is strongly recommended where a stable separate system can match hard alkaline water. Observe respiration, balance, fins, skin, waste and feeding. Do not medicate preventively without a diagnosis. A bare medical tank may be useful for treatment, but a normal observation quarantine benefits from simple cover and a thin suitable substrate or feeding dish so the fish is not left exposed.

Period	What to monitor	Good sign
First hours	Breathing, balance, collisions and harassment	Steady posture and access to shelter
Days 1-3	Feeding response and use of sand	Small foods taken without frantic competition
Week 1	Ammonia, nitrite, pH and social access	Zero toxins and both fish using more than one zone
Weeks 2-4	Weight, fins, waste and pair dynamics	Stable body condition and no fish permanently excluded

Health, stress and troubleshooting

Most early problems begin with environment or social pressure. Rapid breathing can reflect ammonia, nitrite, poor oxygen, excessive heat, gill irritation or disease; clamped fins and dark colour can reflect stress; a hollow belly can reflect poor access to food, parasites or an unsuitable diet. Test the water and observe interactions before choosing a treatment. Blind medication can suppress appetite and disturb biological filtration without addressing the cause.

A temporary sand cloud after a fish sifts or the keeper adjusts the substrate is different from a persistent bacterial haze. Persistent cloudiness calls for checks on cycling, feeding, filter flow and maintenance. Green water or surface algae usually reflects light and nutrients, not a need for an “algae-eating” tank mate. This fish should never be purchased as a cleanup animal.

Sign	Check first	Escalate when
Rapid breathing	Ammonia, nitrite, temperature and surface movement	Water is correct but breathing remains abnormal or worsens
One fish hiding constantly	Pair compatibility and blocked escape routes	It misses meals, loses weight or sustains damage
Refusal to feed	Social access, food size, recent transport and water quality	It persists or is accompanied by abnormal waste or swelling
Sand cloud	Substrate grain, filter direction and recent disturbance	Cloudiness persists with poor water readings
Torn fins	Chasing, rock edges and intake guards	Damage continues, reddens or develops a secondary infection

Breeding and biparental mouthbrooding

Xenotilapia papilio is a biparental mouthbrooder. The pair spawns on or close to the substrate, and both parents participate in caring for the developing brood. This reproductive strategy is one reason pair compatibility matters so much. Breeding is possible in a mature home aquarium, but it should not be encouraged by repeatedly changing temperature or chemistry. Stable conditions, low disturbance and good body condition are more important.

Condition the pair with small varied foods while keeping nitrate and dissolved waste low. Courtship may include closer joint use of a site, fin display and increased defence. A brooding fish may eat less or stop eating while carrying. Do not assume every reduced appetite is brooding; check the mouth, behaviour and partner before reaching a conclusion. Avoid catching or transferring a carrying parent unless welfare requires it, because stress can lead to a brood being swallowed or released too early.

Once fry are released, provide very small appropriate foods, excellent water quality and safe intake protection. The exact timing and division of brooding can vary with the pair and conditions. The broader scientific literature shows that biparental care strategies have evolved repeatedly within Xenotilapia, making parental behaviour an important biological feature rather than a marketing curiosity.

How it differs from similar Tanganyika choices

Fish type	Main aquarium zone	Social emphasis	Best reason to choose it
Tembwe Butterfly Cichlid	Sand-rock transition near the bottom	Compatible adult pair	Subtle display, sediment feeding and biparental care
Open-water Cyprichromis	Mid and upper water	Group	Movement and colour above the rockwork
Shell-dwelling Lamprologus	Shell bed on the bottom	Pair, harem or colony depending on species	Compact territory and shell-based behaviour
Julidochromis	Rock faces and crevices	Pair and rock territory	Strong pattern and cave-oriented behaviour
Tropheus	Rocky littoral	Large managed group	Active grazing and complex colony dynamics

These are ecological comparisons, not automatic mixing suggestions. A fish that occupies a different zone can still be too fast, territorial or demanding for the available volume. For a dedicated look at the genus, visit the Xenotilapia category.

Availability, delivery and arrival planning

Use the live variant selector for the current size, stock status and price. Both listed sizes may not be available at the same time, and no static price in a care guide should override the store's live product data. Because pair compatibility cannot be guaranteed from size alone, contact the team before ordering if the option wording or intended social plan is unclear.

Eligible livestock orders are covered by the Tropical Fish Co Live Arrival Guarantee when the published conditions are followed. Review the current livestock delivery and guarantee details before choosing a delivery date. The code WELCOME10 may provide 10% off an eligible first order under the current promotion terms; checkout confirms whether the product and order qualify.

Frequently asked questions

How large does Xenotilapia papilio Tembwe grow?

FishBase records a maximum of 7.8 cm total length. Aquarium sources and suppliers often round the expected adult size to about 8-10 cm. Plan the tank around territorial floor area rather than treating a small body length as permission to use a small aquarium.

Should Tembwe Butterfly Cichlids be kept as a pair or a group?

Adults normally form pairs and are territorial. Subadults can occur in small groups, so a roomy juvenile group is sometimes used to let a pair form. The keeper must be ready to remove fish that are rejected once adults pair. A permanent group of six is not a safe universal rule.

What is the minimum tank size?

Use at least 150 litres with a 100 cm footprint for an established pair. Increase to 120 cm and roughly 240 litres or more when adding compatible mid-water fish. A juvenile group needs still more territory and spare accommodation.

Does this species need sand?

Yes. It naturally filters sediment for tiny food, so fine rounded sand supports normal feeding and reduces abrasion risk. Keep a large uninterrupted sand area next to secure rock clusters rather than covering the floor with coarse gravel or decoration.

What should Tembwe Butterfly Cichlids eat?

Offer fine sinking granules plus small frozen foods such as cyclops, daphnia, brine shrimp and finely graded mysis. Include a modest algal or plant component in a varied diet. Avoid oversized pellets, heavy predator meals and mammal meat.

Are they peaceful community fish?

No. They can be calm beside carefully selected Tanganyika fish, but they are territorial with their own kind and sensitive to boisterous companions. They are not suitable for Malawi mbuna, soft-water community tanks or crowded bottom zones.

Can males and females be identified from colour?

Not reliably, especially when young or stressed. Mature females may look fuller with eggs and males can appear more robust, but there is no single dependable colour marker. Pair behaviour and mature body condition are better evidence.

How does the Live Arrival Guarantee apply?

The guarantee applies to eligible livestock orders that meet the current delivery, receipt and reporting conditions. Read the linked delivery page before ordering and keep the required arrival evidence. Promotion eligibility, including WELCOME10, is confirmed at checkout.

Scientific and husbandry sources

Care facts were checked against the FishBase species account for Xenotilapia papilio, which summarises Büscher's 1990 description and published distribution, habitat, diet, size and reproductive references. The evolutionary context for parental care was checked against Koblmüller et al., Repeated Parallel Evolution of Parental Care Strategies within Xenotilapia. Locality and practical aquarium observations were cross-checked with the specialist Xenotilapia papilio Tembwe profile. Aquarium targets above are conservative operating ranges, not claims that a captive aquarium reproduces the lake exactly.