Perlmutt Labidochromis Mbuna (Labidochromis sp. perlmutt)

Understand the Perlmutt identity before planning its home

Perlmutt Labidochromis Mbuna is a rock-dwelling cichlid from Lake Malawi in East Africa, sold under the scientific label Labidochromis sp. perlmutt. It suits keepers prepared to run a mature, strongly filtered aquarium, maintain measured hard-water conditions and manage an aggressive Malawi community. The abbreviation “sp.” matters: this is a named aquarium form within the genus rather than a formally identified species.

WoRMS places Labidochromis in the family Cichlidae. Mbuna are the rock-dwelling part of the Lake Malawi cichlid community, so this fish belongs in a purpose-planned Malawi aquarium rather than a general tropical community assembled only by colour or dispatch size.

Natural context

A genus overview of Labidochromis describes these cichlids as endemic to Lake Malawi in East Africa. The genus contains formally described and as-yet undescribed species, which is why the “sp.” identity should remain intact wherever the scientific name is shown.

This natural context gives two decisive planning rules. First, build around the hard, alkaline water required by Malawi cichlids. Second, treat compatibility and breeding identity cautiously because members of the genus may hybridise. A bright appearance or similar body shape is not enough to identify a companion or establish that two forms should be mixed.

Who this fish suits

OATA describes Malawi cichlids as usually undemanding once their specialised water, filtration and stocking needs are met, but their aggression makes deliberate population planning essential.

Choose the dispatch size without mistaking it for adult size

One purchase quantity supplies one animal of the selected option. Use the live size selector to choose between the labels 3 - 4 cm, 4 - 5cm, 6 - 7 cm and XL. The size you select is the size supplied, not the adult size.

The exact species has not been identified, so the care advice here follows the genus Labidochromis and its care group. The centimetre labels are dispatch measurements. XL is a non-numeric grade, so it should not be converted into a centimetre measurement or treated as a guaranteed adult fish. Plan the aquarium, community and long-term filtration before choosing a smaller dispatch fish; the selected grade does not reduce its future space or compatibility needs.

Use the group planning figures correctly

OATA’s African Malawi cichlid guidance gives 23–27°C, pH 8.0–8.6 and general hardness of 12–18°dH for the group. It also says most Malawi cichlids grow to around 10 cm, while some may grow up to 25 cm. Those size figures are planning references for Malawi cichlids rather than a promised mature length for this unidentified form.

For space, OATA recommends an aquarium of at least 200 litres for a reasonable-sized community. Use 200 litres as the starting point for community planning, then favour a larger aquarium where the intended population, mature sizes, rock structure or aggression pattern demands more room. A larger body of water also gives greater stability in temperature and water quality.

Sex is guaranteed only when the selected option explicitly states male or female. This Perlmutt Labidochromis Mbuna listing has no sex-guaranteed option. Do not use colour, an image or a size label to assign the animal a sex.

The gallery images are representative, based on reference photographs of this kind of animal, so colours can look slightly different from the live animal. Use the images to understand the illustrated body shape and scene, while making husbandry decisions from the identity, water and stocking guidance on this page.

Hold the water within the Malawi cichlid range

Keep the aquarium at 23–27°C, with pH 8.0–8.6 and hard water at 12–18°dH general hardness. Carbonate hardness should be 10–15°dKH. These figures belong together: temperature alone does not make a general tropical aquarium suitable for a Malawi cichlid.

Measure the aquarium and source water rather than assuming that clear water has the right chemistry. Our water chemistry guide explains what the measurements mean, while the water matcher helps compare your measured values with the target range. Test before purchase planning, after significant maintenance and at least weekly during routine care.

Control nitrogen waste

Ammonia and nitrite must both remain at 0 mg per litre. Nitrate should not exceed 20 mg per litre above the normal level in your tap water. Test the tap supply as well as the aquarium so that the nitrate limit is interpreted correctly. For example, a tap reading of 15 mg per litre makes 35 mg per litre the stated upper aquarium limit; this is an illustration of the “20 above tap” rule, not a target to aim for.

Respond to any ammonia or nitrite reading as a water-quality problem. Reduce further stocking pressure, check filter flow and blockages, review recent feeding, and carry out the appropriate conditioned-water maintenance. Do not hide a poor reading by adding more animals or food.

Keep changes controlled

Treat replacement tap water with a conditioner that removes chlorine or chloramine before it enters the aquarium. Match routine replacement water closely enough to avoid abrupt temperature or chemistry changes, while keeping the aquarium inside the stated range. Coral sand or a similar substrate can help buffer the water, but it does not replace measurement.

Build around rocks, filtration and oxygen

Start with a mature aquarium of at least 200 litres for a reasonable-sized Malawi community. Prepare the biological filter before adding livestock; our first aquarium guide covers the preparation and maturation sequence. Maturation means establishing the beneficial bacteria that process fish waste, not simply leaving water in an empty tank for a set number of days.

Mbuna are rock-dwelling cichlids, so use rock structure to create a recognisable Malawi layout with shelter and separate areas. These fish dig and rearrange substrate. Place the structure so that digging cannot make it unstable, and check it again whenever the décor is moved to manage aggression.

Choose the substrate for water and behaviour

OATA recommends coral sand or a similar substrate to buffer the water. Keep open areas accessible for siphoning because solid waste collects where flow and digging move it. Malawi cichlids will uproot any plants present as they dig and rearrange the substrate, so a plant-led aquascape should not take priority over stable rockwork, water chemistry and safe maintenance access.

Give the biological filter enough capacity

An oversized filter is recommended because Malawi communities may be deliberately crowded to distribute aggression. The RSPCA explains that biological filtration houses bacteria that convert toxic ammonia first to toxic nitrite and then to safer nitrate. This process makes uninterrupted filter function essential, but it does not remove the need for water changes.

Check that the filter produces steady circulation and is free from blockages. Strong aeration is also recommended so the population receives enough dissolved oxygen. Position the aeration and filter return so water moves through the aquarium rather than leaving obvious stagnant areas around the rock structure.

Plan the whole Malawi community before purchase

Malawi cichlids are aggressive and are not social fish in the schooling sense. OATA advises keeping them in communities of at least 15 and using slight, controlled crowding to distribute aggression; small groups often fight. This is a community-management strategy, not a reason to add fish faster than the biological filter can support.

Plan the intended mature population before selecting the first fish. Write down the aquarium volume, the identity and expected mature size of every proposed resident, the intended number of each form and the order in which they will enter. The 200-litre recommendation is for a reasonable-sized community, so it should not be used to justify any combination of 15 fish without considering mature size and behaviour.

Balance social pressure with filter capacity

Slight crowding may spread aggression, but every additional fish also adds waste and oxygen demand. Increase the population only as the mature filter can maintain ammonia and nitrite at 0 mg per litre. Stocking too quickly may cause new tank syndrome because the bacterial population has not grown enough to process the increased waste and feeding.

Where sexes can be selected reliably, OATA recommends more females than males within each species to reduce persistent male attention towards one female. This offer does not provide a sex-guaranteed option, so do not build a precise male-to-female plan around the fish’s appearance. Instead, make the stocking plan robust enough to cope with sex uncertainty and watch how aggression develops.

Use staged additions deliberately

Add Malawi cichlids in groups so one newcomer does not receive all the attention while settling. Introduce more peaceful species before more aggressive species, and rearrange décor when necessary so established fish must reassess their territories. These actions reduce territorial advantage, but they do not make an unsuitable species combination safe.

1. Before the first addition: confirm water values, mature filtration, community volume and intended identities.
2. Before each later addition: retest ammonia and nitrite and review whether the existing fish have settled.
3. After an addition: observe breathing, swimming, hiding and aggression at feeding and during normal activity.
4. Before increasing numbers again: confirm that filtration and water quality remain stable under the higher waste load.

Feed small meals and protect water quality

Feed twice a day, offering only what the fish can eat within a few minutes. Remove or reduce any portion that remains uneaten. This schedule follows OATA’s Malawi cichlid feeding guidance and is the safest starting routine for the unidentified Perlmutt form.

The dietary needs of Malawi cichlids vary across the group. Mbuna are the rock-dwelling division, and OATA notes that smaller mbuna species are more herbivorous and appreciate specialised Malawi cichlid foods with a high algae content together with fresh vegetables. Use a Malawi formula appropriate to the planned mbuna community rather than assuming that all cichlids need the same food.

Set the portion by observation

“Within a few minutes” is the useful portion limit. Begin with a small amount, watch the entire feed and stop adding food once interest falls or pieces begin reaching places where they will decay. A larger dispatch fish may eat more than a smaller one, but the XL label does not establish a different diet or feeding schedule.

Overfeeding allows uneaten food to break down and release waste into the water. It also increases the load on the biological filter and can push a crowded Malawi community beyond its safe capacity. Portion control therefore supports both body condition and the 0 mg per litre ammonia and nitrite targets.

Keep fresh vegetables and high-algae Malawi food as part of the mbuna feeding decision, but do not turn the general group pattern into a detailed wild diet claim for this form. Consistency, suitable formulation and measured portions are more useful than frequent rich additions.

Make weekly maintenance non-negotiable

At least once every week, change 25% of the water. Use a siphon to remove solid waste from accessible substrate while water is withdrawn. Treat all replacement tap water with conditioner to remove chlorine or chloramine before adding it to the aquarium.

Test ammonia, nitrite and the other working water values at least once each week. Record the results so gradual movement can be seen before it becomes a crisis. A clear-looking aquarium can still contain toxic ammonia or nitrite, and a stable pH reading does not show whether nitrate is rising.

Clean the filter without stripping its bacteria

Check the filter for blockages during routine maintenance. When the media needs cleaning, rinse it lightly in aquarium water removed during the partial water change. Do not rinse established biological media under the tap because chlorine or chloramine may kill the beneficial bacterial population.

A useful weekly order is to test first, change 25% of the water, siphon reachable waste, inspect the filter flow, rinse only the media that needs attention, condition the replacement water and then restore the aquarium. Testing before the change shows how the system performed over the preceding week.

Review the first month as a pattern

At the end of four weekly cycles, compare the results rather than judging one isolated test. Stable zero readings for ammonia and nitrite, controlled nitrate, consistent filter flow and normal feeding show that the present load is being processed. Rising waste values, repeated blockages or declining oxygenation mean the system needs attention before another stocking step.

Keep maintenance consistent even when the aquarium appears settled. Malawi cichlids may live for several years in a well-matured setup with good water quality, so the routine needs to remain practical for the long term.

Acclimatise without adding bag water to the aquarium

Arrange for someone to receive the parcel so live fish are not left unattended. Read the current delivery and Live Arrival Guarantee policy before the delivery window, including the instructions for any claim. Keep the prepared aquarium heated, filtered, aerated and within the required water range before the parcel arrives.

Follow the arrival sequence

1. Start filming before the sealed parcel is opened and record one continuous take showing the outer box, the parcel being opened and the fish still inside the sealed bag.
2. Open and inspect the parcel on the day it arrives.
3. Float the bag in the aquarium for 20–30 minutes.
4. Release the fish without pouring the transport water into the aquarium.
5. Watch breathing, swimming and the response to the surroundings once the fish has entered the tank.

Preventing bag water from entering the aquarium keeps the transport water separate from the prepared display.

Prepare the social environment first

Acclimatisation cannot compensate for an unsuitable community. Before arrival, confirm that the intended residents are Malawi-compatible, the aquarium is at least 200 litres for the community plan, and the population strategy does not leave one newcomer exposed to concentrated aggression. OATA advises adding Malawi cichlids in groups and rearranging décor to reduce established territorial advantage.

Do not respond to initial hiding by immediately moving décor repeatedly or adding extra food. Observe breathing, swimming and aggression, then test water if the fish behaves differently from the expected pattern. Keep ammonia and nitrite at 0 mg per litre throughout the introduction.

Respond to health changes with water tests first

Learn the fish’s normal swimming, colour, breathing, feeding and use of shelter. Individual behaviour varies, so a change from the established pattern is more useful than one isolated pose. Healthy fish should have clear, bright eyes, intact scales, undamaged fins and appropriate swimming behaviour.

Watch for practical warning signs

• Hanging at the surface, sitting on the bottom or swimming erratically.
• Turning darker or paler than the normal appearance.
• Hiding more than normal or showing a marked change in aggression.
• Gill covers moving faster or slower than the usual rate.
• White spots, fluffy growths, damaged fins, missing scales, bumps or ulcerated areas.
• An increase or decrease in body weight or condition.
• Reduced food intake or a loss of interest in feeding.

If any of these changes appear, test ammonia, nitrite, nitrate, pH and temperature first. Confirm filter flow and aeration, review recent additions and look for persistent chasing. This order checks the environmental and social pressures that affect the whole aquarium before a treatment decision is considered.

Do not select medication from one symptom alone. Water problems and aggression may occur alongside visible damage, and adding a treatment without correcting those pressures leaves the underlying risk in place. If you are concerned about a health change, contact us with the test results, aquarium volume, stocking details and a clear description of what changed.

Screen every proposed companion before mixing

Keep this fish within a planned Malawi community. OATA advises that Malawi cichlids should be kept with other Malawi cichlids or with some species of Synodontis catfish that naturally inhabit Lake Malawi. This is a screening boundary, not a claim that every Malawi cichlid or every Synodontis will work.

Start by comparing water needs. Every resident must suit 23–27°C, pH 8.0–8.6 and hard water. Then compare mature size, aggression, feeding, territory use and the planned number of fish. Similar water chemistry cannot make a severe aggression or size mismatch acceptable.

Use a five-step stocking screen

Avoid delicate general-community combinations because the Malawi guidance limits companions to Malawi cichlids and certain Lake Malawi Synodontis. Do not select tetras, livebearers, bettas, shrimp, snails or other non-Malawi animals merely because their temperature range appears to overlap. Avoid combining this fish with another Labidochromis species or form.

Browse the African cichlid collection to compare identities, but assess each proposed fish individually. Product proximity, a similar colour or the word “cichlid” does not establish compatibility.

Compatibility remains conditional because aggression varies with the identities, numbers, maturity and territory pattern in the actual aquarium. For a stocking assessment, contact us with the tank volume, present fish, proposed additions, measured water values and the number of each fish. That information allows the whole plan to be considered rather than approving one name in isolation.

Manage aggression and hybridisation as separate risks

A Malawi combination can meet the water requirements and still fail through aggression. OATA describes these cichlids as aggressive and warns that small groups often fight. Plan at least 15 fish for a reasonable community, use an oversized biological filter, provide strong aeration and keep the population within the aquarium’s measured waste-processing capacity.

Respond to aggression with a sequence

1. Check whether ammonia, nitrite, oxygenation or a blocked filter is adding environmental stress.
2. Identify whether one fish is receiving repeated chasing or being prevented from feeding.
3. Review whether the community has become a vulnerable small group.
4. Rearrange décor so established fish reassess their territories.
5. Reconsider the species combination if pressure remains concentrated.

Adding fish simply to reach a number is not a safe response when the filter or aquarium cannot carry the resulting load. Likewise, adding one isolated newcomer may focus aggression on that animal. Balance the group strategy with slow increases in biological load and zero ammonia and nitrite readings.

Keep one Labidochromis form

Members of Labidochromis may hybridise in aquariums, and the genus guidance recommends keeping only one species from the genus. Because this Perlmutt form has a genus-level identity, avoid combining it with another Labidochromis species or form.

Hybridisation and aggression are different decisions. Two fish might coexist without obvious fighting yet still produce offspring with uncertain parentage. Conversely, fish from different genera may pose an aggression problem even when hybridisation is irrelevant. Screen both risks before finalising the population.

Answer the key buying and care questions

How big does Perlmutt Labidochromis Mbuna get?

Plan around an unidentified Labidochromis form: OATA’s Malawi group guidance says most Malawi cichlids grow to around 10 cm, while some may grow up to 25 cm.

What size aquarium does Perlmutt Labidochromis Mbuna need?

OATA’s Malawi group guidance recommends an aquarium of at least 200 litres for a reasonable-sized community, with stable rockwork, an oversized mature filter and strong aeration.

How many Perlmutt Labidochromis Mbuna should I keep together?

Plan the fish within a carefully assessed Malawi community; OATA’s group guidance permits communities of at least 15 and warns that Malawi cichlids kept in small groups often fight.

Is Perlmutt Labidochromis Mbuna suitable for beginners?

OATA describes Malawi cichlids as usually undemanding but aggressive, so this fish suits a keeper prepared to maintain specialised hard, alkaline water, strong filtration and a deliberately planned community.

What does Perlmutt Labidochromis Mbuna eat?

OATA’s Malawi group guidance recommends specialised Malawi cichlid food with a high algae content and fresh vegetables for smaller mbuna, fed twice daily in portions eaten within a few minutes.

What temperature and pH does this fish need?

OATA’s Malawi group guidance gives 23–27°C, pH 8.0–8.6, 12–18°dH general hardness and 10–15°dKH carbonate hardness, with ammonia and nitrite at 0 mg per litre.

Is it aggressive or likely to nip fins?

OATA describes Malawi cichlids as aggressive and warns that small groups often fight; use a planned community, stable rock structure and careful observation to prevent pressure concentrating on one fish.

Which animals can live with it?

Screen other Malawi cichlids or identified Synodontis species that naturally inhabit Lake Malawi; avoid non-Malawi community animals and avoid another Labidochromis species or form.

How does this fish arrive alive in the UK?

Someone must be present to receive it. Film every delivery continuously from the sealed parcel as it is opened with the fish still in the bag, float the bag for 20–30 minutes, then release the fish without pouring bag water into the aquarium.

Consult the identity and welfare references

• WoRMS: Labidochromis — accepted genus, family and order.
• Wikipedia: Labidochromis — genus distribution, diversity and hybridisation context.
• OATA: African Malawi cichlids — group husbandry, feeding, stocking, maintenance and compatibility.
• RSPCA: fish aquarium environment — biological filtration and waste processing.