Tanganyikan Butterfly Cichlid (Xenotilapia papilio)
A jewel of the Tanganyika sand flats — this mouthbrooding cichlid rewards patient, experienced keepers with extraordinary parental behaviour and delicate butterfly-like finnage.
Will it live with a Tanganyikan Butterfly Cichlid?
We compare each fish against your tanganyikan butterfly cichlid on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.
- Blue Turbo Snail✅ CompatiblePeaceful · 5 cm · Medium care · 25–30 °C (77–86 °F)
- Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 25–28 °C — no size, zone or temperament conflicts.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Boesemani Rainbowfish✅ CompatiblePeaceful · 11 cm · Medium care · 24–28 °C (75–82 °F)
- Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
- Keep Boesemani Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
- Japanese Trapdoor Snail✅ CompatiblePeaceful · 5 cm · Easy care · 10–28 °C (50–82 °F)
- Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Marbled Hoplo✅ CompatiblePeaceful · 14 cm · Easy care · 22–28 °C (72–82 °F)
- Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Murray River Rainbowfish✅ CompatiblePeaceful · 11 cm · Easy care · 15–26 °C (59–79 °F)
- Semi-aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Keep Murray River Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
- Spotted Talking Catfish✅ CompatiblePeaceful · 15 cm · Easy care · 22–26 °C (72–79 °F)
- Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–26 °C — no size, zone or temperament conflicts.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Upside-down Catfish✅ CompatiblePeaceful · 10 cm · Easy care · 22–26 °C (72–79 °F)
- Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–26 °C — no size, zone or temperament conflicts.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Afra Cichlid⚠️ With cautionSemi-aggressive · 10 cm · Medium care · 24–28 °C (75–82 °F)
- Tanganyikan Butterfly Cichlid and Afra Cichlid can both be territorial; doable with space and dense planting, but watch for chasing.
- Your 130 L tank is below the ~150 L this pairing really wants — crowding raises aggression.
- Keep Afra Cichlid in a shoal of 6+ or it gets stressed and nippy.
- Bearded Corydoras⚠️ With cautionPeaceful · 10 cm · Medium care · 18–24 °C (64–75 °F)
- Different pH ranges (8–9 vs 6–7.6); doable if you sit in the shared band, but not ideal long-term.
- Keep Bearded Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Clown Rasbora⚠️ With cautionPeaceful · 10 cm · Medium care · 23–28 °C (73–82 °F)
- Different pH ranges (8–9 vs 5.5–7); doable if you sit in the shared band, but not ideal long-term.
- Tanganyikan Butterfly Cichlid is semi-aggressive and may chase or nip the smaller Clown Rasbora — plant heavily and break up sight lines.
- Keep Clown Rasbora in a shoal of 6+ or it gets stressed and nippy.
- Daffodil Cichlid⚠️ With cautionSemi-aggressive · 10 cm · Medium care · 23–27 °C (73–81 °F)
- Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
- Electric Yellow Cichlid⚠️ With cautionSemi-aggressive · 10 cm · Medium care · 23–26 °C (73–79 °F)
- Tanganyikan Butterfly Cichlid and Electric Yellow Cichlid can both be territorial; doable with space and dense planting, but watch for chasing.
- Your 130 L tank is below the ~200 L this pairing really wants — crowding raises aggression.
- Giant Danio⚠️ With cautionPeaceful · 10 cm · Easy care · 20–27 °C (68–81 °F)
- pH preferences only just meet (Tanganyikan Butterfly Cichlid 8–9 vs Giant Danio 6.5–7.5) — target the overlap and acclimate slowly.
- Tanganyikan Butterfly Cichlid is semi-aggressive and may chase or nip the smaller Giant Danio — plant heavily and break up sight lines.
- Keep Giant Danio in a shoal of 6+ or it gets stressed and nippy.
- Golden Wonder Killifish⚠️ With cautionSemi-aggressive · 10 cm · Easy care · 22–28 °C (72–82 °F)
- pH preferences only just meet (Tanganyikan Butterfly Cichlid 8–9 vs Golden Wonder Killifish 6–7.5) — target the overlap and acclimate slowly.
- Tanganyikan Butterfly Cichlid and Golden Wonder Killifish can both be territorial; doable with space and dense planting, but watch for chasing.
- Keyhole Cichlid⚠️ With cautionPeaceful · 10 cm · Easy care · 22–28 °C (72–82 °F)
- Different pH ranges (8–9 vs 6–7.5); doable if you sit in the shared band, but not ideal long-term.
- Expect Tanganyikan Butterfly Cichlid to harass Keyhole Cichlid at times; give dense cover and watch them at feeding.
- Kribensis⚠️ With cautionSemi-aggressive · 10 cm · Easy care · 24–27 °C (75–81 °F)
- Different pH ranges (8–9 vs 6–7.5); doable if you sit in the shared band, but not ideal long-term.
- Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
- Kuhli Loach⚠️ With cautionPeaceful · 10 cm · Easy care · 24–30 °C (75–86 °F)
- pH preferences only just meet (Tanganyikan Butterfly Cichlid 8–9 vs Kuhli Loach 5.5–7) — target the overlap and acclimate slowly.
- One likes softer water and the other harder (10–20 vs 1–8 dGH) — a compromise, not a perfect match.
- Molly⚠️ With cautionPeaceful · 10 cm · Easy care · 23–28 °C (73–82 °F)
- Expect Tanganyikan Butterfly Cichlid to harass Molly at times; give dense cover and watch them at feeding.
- Porthole Catfish⚠️ With cautionPeaceful · 10 cm · Easy care · 22–28 °C (72–82 °F)
- Different pH ranges (8–9 vs 6–7.5); doable if you sit in the shared band, but not ideal long-term.
- Rosy Barb⚠️ With cautionSemi-aggressive · 10 cm · Easy care · 18–26 °C (64–79 °F)
- Tanganyikan Butterfly Cichlid and Rosy Barb can both be territorial; doable with space and dense planting, but watch for chasing.
- Keep Rosy Barb in a shoal of 6+ or it gets stressed and nippy.
- Rusty Cichlid⚠️ With cautionSemi-aggressive · 10 cm · Medium care · 24–28 °C (75–82 °F)
- Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
- Your 130 L tank is below the ~150 L this pairing really wants — crowding raises aggression.
- Topaz Cichlid⚠️ With cautionSemi-aggressive · 10 cm · Medium care · 23–28 °C (73–82 °F)
- pH preferences only just meet (Tanganyikan Butterfly Cichlid 8–9 vs Topaz Cichlid 6.5–7.5) — target the overlap and acclimate slowly.
- Tanganyikan Butterfly Cichlid and Topaz Cichlid can both be territorial; doable with space and dense planting, but watch for chasing.
- Zebra Pleco⚠️ With cautionPeaceful · 10 cm · Hard care · 26–30 °C (79–86 °F)
- Different pH ranges (8–9 vs 6.5–7.5); doable if you sit in the shared band, but not ideal long-term.
- Alligator Gar⛔ Not recommendedAggressive · 250 cm · Hard care · 24–28 °C (75–82 °F)
- Tanganyikan Butterfly Cichlid and Alligator Gar are both territorial and at least one is outright aggressive — expect serious fighting.
- Size gap is too large (250 vs 10 cm): Alligator Gar will treat Tanganyikan Butterfly Cichlid as food.
- Different pH ranges (8–9 vs 6.8–7.8); doable if you sit in the shared band, but not ideal long-term.
- Your 130 L tank is below the ~3785 L this pairing really wants — crowding raises aggression.
- Clown Knifefish⛔ Not recommendedAggressive · 90 cm · Hard care · 24–28 °C (75–82 °F)
- Two assertive fish, one genuinely aggressive: Tanganyikan Butterfly Cichlid and Clown Knifefish will hold territory and clash.
- Clown Knifefish (90 cm) is big enough to swallow the 10 cm Tanganyikan Butterfly Cichlid whole.
- pH preferences only just meet (Tanganyikan Butterfly Cichlid 8–9 vs Clown Knifefish 6–7.5) — target the overlap and acclimate slowly.
- Your 130 L tank is below the ~750 L this pairing really wants — crowding raises aggression.
- Fire Eel⛔ Not recommendedSemi-aggressive · 100 cm · Medium care · 24–28 °C (75–82 °F)
- Size gap is too large (100 vs 10 cm): Fire Eel will treat Tanganyikan Butterfly Cichlid as food.
- pH preferences only just meet (Tanganyikan Butterfly Cichlid 8–9 vs Fire Eel 6.5–7.5) — target the overlap and acclimate slowly.
- Tanganyikan Butterfly Cichlid and Fire Eel can both be territorial; doable with space and dense planting, but watch for chasing.
- Your 130 L tank is below the ~380 L this pairing really wants — crowding raises aggression.
- Koi⛔ Not recommendedPeaceful · 90 cm · Medium care · 4–28 °C (39–82 °F)
- Size gap is too large (90 vs 10 cm): Koi will treat Tanganyikan Butterfly Cichlid as food.
- Your 130 L tank is below the ~3800 L this pairing really wants — crowding raises aggression.
- Redtail Catfish⛔ Not recommendedAggressive · 120 cm · Hard care · 24–27 °C (75–81 °F)
- Tanganyikan Butterfly Cichlid and Redtail Catfish are both territorial and at least one is outright aggressive — expect serious fighting.
- Size gap is too large (120 vs 10 cm): Redtail Catfish will treat Tanganyikan Butterfly Cichlid as food.
- Different pH ranges (8–9 vs 6–7.5); doable if you sit in the shared band, but not ideal long-term.
- Your 130 L tank is below the ~5700 L this pairing really wants — crowding raises aggression.
- Spotted Gar⛔ Not recommendedAggressive · 90 cm · Hard care · 18–26 °C (64–79 °F)
- Tanganyikan Butterfly Cichlid and Spotted Gar are both territorial and at least one is outright aggressive — expect serious fighting.
- Size gap is too large (90 vs 10 cm): Spotted Gar will treat Tanganyikan Butterfly Cichlid as food.
- Different pH ranges (8–9 vs 6.5–7.5); doable if you sit in the shared band, but not ideal long-term.
- Your 130 L tank is below the ~600 L this pairing really wants — crowding raises aggression.
- Wels Catfish⛔ Not recommendedAggressive · 300 cm · Hard care · 15–25 °C (59–77 °F)
- Tanganyikan Butterfly Cichlid and Wels Catfish are both territorial and at least one is outright aggressive — expect serious fighting.
- Tanganyikan Butterfly Cichlid is bite-sized to a 300 cm predatory wels catfish — it will be eaten.
- Different pH ranges (8–9 vs 6.5–7.5); doable if you sit in the shared band, but not ideal long-term.
- Your 130 L tank is below the ~20000 L this pairing really wants — crowding raises aggression.
- Wolf Cichlid⛔ Not recommendedAggressive · 72 cm · Hard care · 24–30 °C (75–86 °F)
- Two assertive fish, one genuinely aggressive: Tanganyikan Butterfly Cichlid and Wolf Cichlid will hold territory and clash.
- Size gap is too large (72 vs 10 cm): Wolf Cichlid will treat Tanganyikan Butterfly Cichlid as food.
- Your 130 L tank is below the ~760 L this pairing really wants — crowding raises aggression.
Compatibility is computed from each species' care data — a strong starting point, not a guarantee. Individual temperament varies, so always introduce new fish slowly and watch them.
Tanganyikan Butterfly Cichlid care specs
- Care level
- Hard
- Breeding
- Very Hard
- Max size
- 10 cm (3.9 in)
- Min tank size
- 130 L (34.3 gal)
- Temperature
- 24–28 °C (75–82 °F)
- pH
- 8–9
- Hardness
- 10–20 dGH
- Lifespan
- 5–8 years
- Diet
- Omnivore
- Swim level
- Bottom
- Group size
- 5+ (shoaling)
- Family
- Cichlidae
- Origin
- Lake Tanganyika, East Africa (sandy littoral zones)
What is the Tanganyikan Butterfly Cichlid?
The Tanganyikan butterfly cichlid (Xenotilapia papilio) is a slender, sand-dwelling cichlid endemic to Lake Tanganyika in East Africa. It reaches around 10 cm (4 in) and is immediately recognisable by the long, ornate extensions of its dorsal and caudal fin rays — the “butterfly” finnage that gives it both its common name and its scientific epithet, papilio being Latin for butterfly. The body is silver-cream overlaid with shifting blue-green iridescence, making it one of the more visually refined cichlids available to the specialist keeper.
Unlike the brawling rock-dwellers of Lake Malawi, X. papilio inhabits open sandy flats and grazes through the substrate for small invertebrates. It is a biparental mouthbrooder: both the male and female carry fry in their mouths through the brooding cycle, a level of co-operative parental care that is rarely seen in the hobby and endlessly fascinating to observe. That complexity, combined with strict water requirements and pronounced intra-group aggression during breeding, places this species firmly in the advanced category. It is not a fish for beginners or for casual community tanks.
Where do Tanganyikan Butterfly Cichlids come from in the wild?
Xenotilapia papilio is endemic to Lake Tanganyika, the world’s second-deepest lake, sitting in the East African Rift Valley and shared by Tanzania, the Democratic Republic of Congo, Burundi and Zambia. The species occupies the sandy littoral zones — the shallow, open-water interface areas along the shoreline — typically at depths of one to several metres, where fine sand grades into the open lake.
The lake’s water is famously stable: hard, highly alkaline and richly mineralised, with pH typically 8.5–9.0, hardness of 10–20 dGH and a temperature band that barely shifts across seasons. There is no rainy-season dilution event to trigger a soft-water flush. That extreme stability is precisely why X. papilio has zero tolerance for soft, acidic or fluctuating water in captivity — it simply has no evolutionary experience of it. Understanding that origin is not background trivia; it is the central design constraint for every decision you will make about keeping this fish.
What tank size and setup does the Tanganyikan Butterfly Cichlid need?
The minimum is 130 litres (about 34 gallons), and that is a hard floor driven by two pressures: the fish’s active sand-sifting lifestyle and the intra-group territorial dynamics that erupt during breeding. In practice, 180–200 L (47–53 gal) gives a colony of five to six fish a workable footprint with significantly less chronic conflict. Prefer a tank with a larger base area over a tall column — footprint is what matters for a bottom-dwelling, flat-habitat fish.
Substrate is not optional. Provide at least 5 cm of fine, pale sand — pool filter sand or aragonite sand both work and aragonite also buffers pH upward. Coarse gravel prevents sifting behaviour and stresses the fish. Leave open sandy patches across most of the floor; X. papilio is a mid-floor grazer, not a cave-seeker.
Décor should be minimal and Tanganyikan-authentic: a few flat rocks or slate pieces can define territories and provide visual breaks, but there is no need for heavy rockwork. Avoid dense planting — it is foreign to the species’ habitat and obstructs the open sand it needs. A tightly fitted lid is sensible, as excited fish can jump. Filtration should be efficient but produce moderate flow; the sandy biotope is not a high-current environment.
What water parameters do Tanganyikan Butterfly Cichlids need?
- Temperature: 24–28 °C (75–82 °F) — a quality heater with a reliable thermostat is essential.
- pH: 8.0–9.0. Target 8.5 as a comfortable midpoint. If your tap water is soft and acidic, buffer it with cichlid salts or crushed coral/aragonite substrate.
- Hardness: 10–20 dGH. This is genuinely hard water by most standards; soft-water tap supplies will need significant mineralisation.
Stability is the master priority. A pH that sits steady at 8.2 is better than one that swings between 8.0 and 8.8. Test water weekly, perform 20–25% water changes on a consistent schedule, and use a drip or temperature-matched replacement to avoid thermal shocks. This species is among the most sensitive in the hobby to sudden parameter changes; a drop in pH or a cold-water change can trigger a stress response that opens the door to disease.
What do Tanganyikan Butterfly Cichlids eat?
In the wild, X. papilio is an omnivore that sifts sand for small invertebrates — insect larvae, tiny crustaceans and organic detritus. In captivity the diet should reflect that: offer a quality cichlid micro-pellet or granule as the staple, supplemented regularly with frozen or live cyclops, daphnia, baby brine shrimp and small bloodworms. Spirulina-based foods can round out the diet and support colouration.
Feed small amounts two to three times daily — amounts the fish consume within two to three minutes. Remove any uneaten food promptly, as decaying food in a sand substrate damages water quality quickly and this species is unforgiving of ammonia or nitrite spikes. Do not rely on sinking wafers designed for large cichlids; the small mouth of X. papilio is sized for tiny, fine food items.
Are Tanganyikan Butterfly Cichlids aggressive — and what fish can live with them?
X. papilio is rated semi-aggressive, and the aggression is primarily intra-specific — directed at its own kind, particularly between competing males during breeding. A lone pair or a colony with insufficient space will see chronic chasing and fin damage. The recommended approach is to keep a group of five or more (at least two males, three or more females) so that aggression is distributed across the group rather than concentrated on one subordinate individual.
Tankmate selection requires genuine care. Compatible choices are other sand-dwelling Tanganyikan cichlids of similar size and disposition — Cyprichromis species make excellent open-water dithers above the sand zone and reduce anxiety across the whole group. Avoid aggressive, larger cichlid species that will bully or outcompete X. papilio for space. Avoid fish that disturb the substrate aggressively (many large South American cichlids). Shell-dwellers can share a tank if given their own clearly demarcated territory. Rift-lake catfish (e.g. Synodontis) are generally acceptable.
For a complete, filterable guide to compatible and incompatible species, see Tanganyikan Butterfly Cichlid tank mates.
How do you tell male and female Tanganyikan Butterfly Cichlids apart?
Sexing becomes increasingly reliable as the fish mature. Males are noticeably larger — typically approaching the full 10 cm (4 in) — and develop significantly longer, more elaborate dorsal and caudal fin extensions. The iridescent blue-green colouration is also brighter and more saturated in males, especially when displaying. Females are smaller and plainer, with shorter fins and less intense colouration. Juvenile fish are difficult to sex reliably; purchasing a group of six or more from a reputable importer and allowing natural pairing to emerge is the practical approach for most hobbyists.
How do Tanganyikan Butterfly Cichlids breed?
This species is rated Very Hard to breed for good reason. X. papilio is a biparental delayed mouthbrooder — a rare and complex reproductive strategy in which both parents hold developing eggs and fry in their mouths, and may even transfer fry between their mouths during the brooding period.
Spawning occurs on open sand. The female deposits eggs and the male fertilises them; both parents then take eggs into their mouths. The brooding period runs several weeks, during which the carrying fish eat little or nothing. At release, fry are relatively well-developed but still vulnerable. A breeding colony needs a large tank (200 L+ is strongly preferred), multiple spawning sites across open sand, and clear visual barriers so that non-breeding fish are not constantly harassing the brooding pair. Raising fry requires live micro foods — baby brine shrimp nauplii are the practical choice. Success demands a stable, well-matured tank and a dedicated, experienced keeper.
What diseases affect Tanganyikan Butterfly Cichlids?
The primary health threats for X. papilio are almost all traceable to water-quality failures. Malawi/Tanganyika bloat (a form of digestive distress and internal swelling common in rift-lake cichlids) is triggered by poor water quality or unsuitable diet. Bacterial infections — presenting as frayed fins, ulcers or raised scales — follow close behind, again almost always linked to degraded water or physical injury from conspecific aggression. White spot (ich) can appear if temperature drops or new fish are introduced without quarantine.
Prevention is straightforward in principle: maintain the strict water parameters this species demands, quarantine all new additions for four to six weeks, feed a varied and appropriate diet, and remove damaged or chronically subordinate fish before stress-induced disease takes hold. A well-maintained tank with stable, hard, alkaline water and no sudden parameter swings will rarely see disease in this species.
Health note: Diagnosing specific diseases and dosing medication are beyond the scope of a care profile. For sick fish, confirm symptoms carefully against a reputable aquatic veterinary or fish-health resource before medicating — rift-lake cichlids can respond poorly to medications formulated for soft-water species.
How long do Tanganyikan Butterfly Cichlids live?
A well-kept X. papilio lives 5–8 years in captivity. Achieving the upper end of that range requires exactly what the species demands throughout: stable alkaline water, a stress-managed group dynamic, a varied and appropriate diet, and a keeper willing to act quickly when parameters slip or aggression escalates. These are not forgiving fish, but keepers who provide the right conditions consistently are rewarded with long-lived, behaviourally rich fish that display the full extent of their remarkable colouration and parental repertoire.
Frequently asked questions
Why is the Tanganyikan Butterfly Cichlid rated Hard to keep?
It is extremely sensitive to water quality and requires stable, hard, highly alkaline water (pH 8.0–9.0) that many tap supplies cannot provide without conditioning. It is also intensely territorial with its own kind during breeding, demanding a large footprint and careful group management to prevent chronic stress and fatalities.
Does the Tanganyikan Butterfly Cichlid need a sandy substrate?
Yes — sand is not optional. In the wild it sifts through sand for invertebrates and uses sandy patches as spawning sites. A fine sand substrate of at least 5 cm depth is essential for natural behaviour, health and successful breeding.
What you need to keep a tanganyikan butterfly cichlid
The baseline is a heated, filtered 130 L+ tank: a reliable heater to hold 24–28 °C (75–82 °F), a gentle filter that won't batter a tanganyikan butterfly cichlid in the current, and a tight-fitting lid. Cycle the tank fully before adding any fish.
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