Mutondwe Compressiceps (Altolamprologus compressiceps), 3-4cm

Mutondwe Compressiceps is the aquarium trade name used for this Altolamprologus compressiceps, a high-backed, strongly compressed cichlid associated with the rocky shores of Lake Tanganyika. The fish offered here is a small juvenile at approximately 3-4 cm. It is an absorbing species for a planned Tanganyika aquarium, but it is not a general community fish: the keeper must provide stable hard, alkaline water, mature filtration, secure rockwork and enough usable territory for the final stocking plan.

Mutondwe Compressiceps quick care guide

Identity, trade name and provenance

The supplier abbreviates the product as Lamprologus / comp. mutondwe. That wording belongs in the audit trail, but the accepted public species name is Altolamprologus compressiceps. Eschmeyer's Catalog of Fishes records Lamprologus compressiceps as Boulenger's original 1898 combination and Altolamprologus compressiceps as the current valid name. Using the accepted name helps buyers distinguish this fish from unrelated species that also carry the word compressiceps.

Mutondwe is a recognised locality or trade label in the Tanganyika hobby. It is useful for describing the form being sold, but it is not a certificate of origin. Petra did not supply a collection locality, breeder, wild-caught status or captive-bred status for this batch. This listing therefore does not claim that the individual fish was collected or bred at Mutondwe Island. It describes the supplier's Mutondwe trade form and keeps batch provenance separate from species-level information.

The species itself is endemic to Lake Tanganyika and is widely distributed around the lake. Geographic populations can differ in colour and body details, and peer-reviewed work has found population differentiation at relatively small geographic scales. That makes careful naming valuable, but it also means a photograph or trade label should not be stretched into an undocumented provenance claim.

What the juvenile may look like as it develops

Altolamprologus compressiceps has a deep body that is very narrow when seen head-on. Its short, upturned head profile, strong dorsal outline and patterned fins give it a different silhouette from most African cichlids. The compressed shape is functional: research links it with feeding among rock crevices, where the fish can inspect spaces that bulkier predators cannot use as effectively.

The fish supplied is only about 3-4 cm. Colour intensity, barring, fin extension and head tone can change with growth, stress, social position, diet, water, lighting and the individual. Sex is not reliably promised at this sale grade. A juvenile that arrives paler than an illustration is not automatically the wrong form, and no exact adult colour pattern is guaranteed.

Is this the right cichlid for your aquarium?

This is a moderate-care species rather than a beginner-proof purchase. Its needs are straightforward once the aquarium is prepared, but errors in chemistry, territory design and companion choice are difficult to correct after several territorial cichlids have been introduced. The general cichlid care guide can help with cycling, filtration and aggression planning, while the values on this page remain the product-specific starting point.

Aquarium size: use footprint and territory, not litres alone

A single litre figure cannot decide whether a Tanganyika cichlid layout is suitable. Rocks displace water and remove swimming space; a tall narrow aquarium can hold the same volume as a long tank but provide far fewer territories; and two unsexed juveniles may mature into incompatible adults. Adult body size, sex, rock volume, sight breaks and every companion all matter.

For permanent planning, roughly 200 litres with a long footprint is a conservative specialist starting point often used for standard A. compressiceps, not a promise that any 200-litre aquarium can house a pair. Increase space substantially for more than one, for a mixed Tanganyika community or for a rock-heavy layout that leaves little open floor. If the intended aquarium is close to that starting point, decide the complete adult stock list before ordering and be prepared with a separation plan.

Use the tank volume calculator for actual water volume after measuring the aquarium, then discount the space occupied by substantial rockwork. The number is a planning input, not permission to ignore territory.

Build a safe rocky Tanganyika layout

Arrange hardscape before the fish arrives. Support heavy rocks on a stable base so they cannot collapse if substrate moves. Create several narrow retreats, but also leave openings large enough that the juvenile cannot wedge itself irretrievably. Break direct sight lines from one end of the aquarium to the other and provide more usable shelters than territorial fish.

Fine sand can make maintenance and natural foraging easier, but substrate choice should follow the chemistry of the water rather than marketing claims. Calcareous material can raise hardness and alkalinity; that is useful only when testing shows it is needed and the effect is understood. Sudden additions of buffer are not a substitute for stable source water and measured maintenance.

Strong biological filtration and good oxygenation matter because a protein-rich feeding routine can create waste quickly. Avoid directing a harsh jet through every resting crevice. A secure lid is sensible for any startled cichlid, and heater guards or protected heater placement reduce collision and burn risk around dense hardscape.

Water parameters and stability

The Petra stock record gives 23-26°C, pH 7.5-8.5 and 10-25 dGH. Those are the practical planning values for this listing. They should be treated as a stable operating envelope, not three targets to push towards their highest values. Choose a point inside the overlap shared by the fish, the intended companions and the aquarium's source water.

Measure the aquarium before ordering and again before release. Temperature, pH and hardness must be interpreted together with ammonia, nitrite, nitrate, oxygenation and maintenance history. Ammonia and nitrite should remain at zero; rising nitrate or an unstable pH is a warning to correct the system before adding another fish. The water parameter matcher can help compare measured values, but a test result is more useful than an assumed postcode average.

Feeding a specialised shrimp-feeding cichlid

Field research describes A. compressiceps as a specialised shrimp feeder. Its compressed body, head shape and protrusible mouth help it take prey around rock crevices. A FishBase diet record from Lake Tanganyika found atyid shrimp dominated the sampled diet. That ecological evidence explains the fish's design; it does not mean an aquarium specimen should be fed only shrimp.

Use a reputable, correctly sized sinking or slow-sinking carnivorous cichlid food as the nutritional base, then rotate suitable frozen invertebrate foods such as mysis or brine shrimp. Offer small portions that the fish can finish cleanly and watch that it actually receives them. Juveniles may be cautious beside fast feeders, so place food close enough to the rock boundary for the fish to feed without allowing leftovers to disappear into inaccessible gaps.

Avoid fatty mammal meat and do not use unquarantined feeder fish. Live feeders add disease and welfare risks without being necessary for routine nutrition. Overfeeding is also a common mistake: a predator can look interested after it has eaten enough, while uneaten protein degrades water quality inside rockwork.

Behaviour and territory

A settled Compressiceps often spends time beside rock faces, watching gaps and moving in short deliberate bursts. That calm appearance should not be confused with harmlessness. It is a small-prey predator and a cichlid that can defend shelter, particularly as it matures. A fish may be reserved during the first days and become more territorial after claiming a crevice.

Observe access to food, resting sites and escape routes rather than relying only on visible fighting. Subordinate fish may be excluded quietly and lose condition before obvious fin damage appears. Persistent hiding, clamped fins, rapid breathing, refusal of food or being pinned to an upper corner all justify immediate investigation.

Compatibility: screen risks instead of using a yes-list

Matching the pH range is only the first step. A suitable companion must also be too large to swallow, able to feed without starving this deliberate hunter, and unlikely to demand the same cave. Individual temperament, sex, adult size and the exact layout can change the result, so this listing does not promise that named species will coexist.

For comparison rather than automatic cohabitation, browse the canonical African cichlid collection. Other live Tanganyika listings include Marlier's Julie, Striped Julie Kipili, Golden Julie and Striped Julie. Compare their own care pages and territory use; these links are not a promise that they belong together in a particular aquarium.

Multi-buy pricing is not pair certification

The storefront may highlight two fish as a discounted multi-buy. This is a price mechanic attached to quantity, not biological evidence. At 3-4 cm, sex may not be reliably visible, two juveniles may mature as the same sex, and even a male and female may not form a stable pair. Each selected quantity remains one individual fish.

Buy more than one only when the aquarium, spare equipment and experience support several unknown juveniles. A divider, quarantine tank or second cycled aquarium is a practical contingency, not an admission that aggression will definitely occur. The important point is to have an option before a fish is trapped or losing condition.

Breeding behaviour as species context

Altolamprologus compressiceps is known as a cave or crevice substrate spawner. A female can use a narrow opening and the larger male may remain outside. This explains why secure crevices and sex-related size differences matter in mature fish, but it does not convert this juvenile listing into a breeding offer.

Breeding projects require verified adult compatibility, multiple shelters, very stable water, appropriate fry foods and a plan for separating adults or young. Do not buy two at random on the assumption that the two-fish discount or gallery image supplies a ready-made pair.

Delivery-day preparation and acclimation

Finish the aquascape, cycle and water testing before dispatch. On delivery, inspect the sealed bag promptly and follow the current Live Arrival Guarantee instructions before changing the bag or discarding packaging. Keep the room calm and aquarium lights low.

Temperature and chemistry both matter, but the method must account for time in transit and the condition of the bag. Follow the acclimation guide and use the acclimation timer as practical prompts. Do not pour transport water into the display aquarium. Once released, give the fish access to cover and observe respiration, balance and aggression.

Health observations and when to act

A newly moved cichlid may hide and show muted colour, but it should remain upright and breathe without continuous distress. Look for a steady improvement in confidence and feeding. Rapid gill movement, gasping, loss of balance, repeated flashing, white spots, damaged fins, a hollowing belly or complete food refusal need investigation.

Start with measurable causes: temperature, ammonia, nitrite, pH change, oxygenation and aggression. Quarantine protects the display and allows close observation. Medication should follow a plausible diagnosis and product directions because unnecessary treatment can harm the fish, filter and any invertebrates.

How to read the five-image gallery

The first four are representative illustrations created from the supplier fish reference; they help show the body profile and possible aquarium presentation. The fifth is the supplier source photograph. None is a photograph of the exact juvenile selected for an order.

The planted backgrounds in some illustrations are presentation scenes, not a claim that this is a soft-water planted-community species. The two-fish scene is not a quantity promise. Living fish vary in size within the stated grade, sex, colour, markings, posture and fin condition, and their appearance changes with age and environment.

Source trail and evidence boundaries

This care page separates product-specific supplier values from broader species science. The sale grade, 12 cm maximum and water ranges come from the Petra record for this stock line. The accepted name and original combination are checked against Eschmeyer's Catalog of Fishes. Distribution and the cited 12.3 cm total length come from FishBase.

The rock-dwelling, compressed-body and specialised shrimp-feeding explanation is supported by a peer-reviewed population and morphology study and its cited ecological work. The Mutondwe name is retained as the supplier's trade form, while the absent batch-origin field is stated plainly rather than filled with an assumption.

Ordering this 3-4 cm juvenile

Choose the number of individual fish deliberately and review the multi-buy total before adding to the basket. Each quantity is one unsexed juvenile; size is approximate and living animals vary. The current price and availability shown in the buy box come directly from live Shopify data and can change with supplier stock, so they are not repeated in this description.

Eligible livestock orders are covered by the Live Arrival Guarantee when its current evidence and timing terms are followed. Eligible first orders can use WELCOME10 for 10% off. A discount should never decide stocking: confirm the adult plan, measured water, protected territories and contingency space first.