Maingano Cichlid (Pseudotropheus cyaneorhabdos)

Recognise the Maingano Cichlid

The Maingano Cichlid, Pseudotropheus cyaneorhabdos, is a freshwater member of the cichlid family. FishBase records a maximum of 7.5 cm standard length and places the wild fish in Lake Malawi, where it lives in association with rocks. Standard length excludes the tail fin, so retain that measurement convention whenever you compare the scientific figure with a fish in front of you.

A natural-history summary of the species describes it as a mbuna endemic to the area around Likoma Island. It favours rocky substrates at depths of 5–10 metres. Both sexes have the characteristic blue horizontal pattern, females are not orange, and dominant or sexually active males may show more intense colouring. The absence of vertical stripes also helps distinguish this fish from similarly named Lake Malawi cichlids.

What its wild biology tells you

• Rock association: build the aquarium around substantial rock cover rather than an open general-community layout.
• Restricted distribution: never release aquarium fish into the wild or move them between natural waters.
• Wild feeding: FishBase records zooplankton and epibenthic invertebrates, so its natural diet is not accurately described by colour or by the mbuna label alone.
• Conservation: FishBase records the species as Critically Endangered; this status concerns the wild population and does not identify the origin of an individual aquarium fish.

Its compact body does not remove the need to plan around territorial Malawi-cichlid behaviour. Choose it for a purpose-built rocky aquarium whose water chemistry, filtration and social plan are already settled.

Choose the dispatch size without confusing it with adult size

One purchase quantity means one animal of the size option you select. Use the live size selector to choose between 4 - 5 cm, 6 - 7 cm, 7 - 9 cm and 9 - 13 cm, then set the quantity to the number of individual fish required.

The size you select is the size supplied, not the adult size. These labels are dispatch grades, whereas FishBase’s 7.5 cm figure is a maximum recorded standard length. Keep the two contexts separate: the selector answers which size grade is sent, while the scientific measurement provides the supported adult-size reference. Do not use a dispatch band to infer age, maturity or sex.

Sex is guaranteed only when the selected option explicitly states male or female. This Maingano Cichlid listing has no sex-guaranteed option.

Some gallery images have been digitally enhanced to improve image quality. They show the listed type of animal rather than guaranteeing the exact markings of the individual supplied, so natural colour and pattern can vary. Use them to understand the blue-and-dark horizontal pattern and general cichlid form, not to predict the markings, sex or exact appearance of an individual fish.

Check the decisive care numbers before choosing

OATA’s African Malawi cichlid advice gives 23–27°C, pH 8.0–8.6, general hardness of 12–18°dH and at least 200 litres for a reasonable community as broad group guidance. Use these as Malawi-community planning values rather than as a species optimum.

Our care assessment is advanced. The routine feeding and water-change schedule is straightforward, but specialist water values and aggression management leave little room for an improvised setup. A keeper must be able to test the water, recognise exclusion from food or territory, and change the social arrangement before injury follows.

This fish suits an aquarist building a dedicated Lake Malawi system. It is a poor match for a soft-water community or for an aquarium chosen only because the fish itself is small. Browse the African cichlid collection only after fixing the aquarium’s water range, filtration capacity and total community plan.

Check whether this animal suits the aquarium

Plan the aquarium around the whole Malawi community

Use an aquarium of at least 200 litres for a reasonable Malawi-cichlid community. That figure applies to the community rather than acting as a species-specific minimum for one Maingano. Rock, substrate and internal equipment reduce the working water volume, so begin with the complete stocking and aquascaping plan instead of fitting this fish into spare nominal litres.

Turn the volume into useful territory

A Malawi aquarium needs both shelter and routes between shelters. Arrange several rock areas so a fish can leave a confrontation and move towards food without remaining in view of the same dominant resident. Retain open water between structures rather than filling every gap with stone. OATA describes mbuna as rock-dwelling fish and warns that Malawi cichlids are aggressive, so the layout must help fish disengage.

Malawi cichlids will often dig and rearrange substrate. Set rockwork securely so excavation cannot undermine it, and keep filter intakes and maintenance routes accessible. OATA recommends coral sand or a similar substrate for buffering; test the resulting chemistry rather than assuming a substrate alone will hold the required pH and hardness.

Plants are secondary to the rock structure. OATA says Malawi cichlids will uproot any plants present, so do not rely on planted substrate as permanent cover. Do not alter suitable Malawi water merely to preserve a plant.

Hold the water values steady

Keep the aquarium between 23 and 27°C, maintain pH 8.0–8.6, and hold general hardness within 12–18°dH. OATA also gives carbonate hardness of 10–15°dKH for Malawi cichlids. Test your tap water and aquarium before choosing any buffering or remineralising method, then prepare replacement water consistently.

The target is repeatable chemistry, not movement towards the upper edge of every range. For example, an aquarium holding steadily at pH 8.2 does not benefit from an abrupt adjustment towards 8.6. A measured value inside the range, paired with stable hardness and regular maintenance, gives the fish a more predictable environment.

Use measured water, not assumptions

Read our water chemistry guide to understand what each test measures. Enter actual results into the aquarium water matcher rather than judging suitability from regional reputation or one old test.

If source water falls outside the working range, select one controlled preparation method and test each new batch before it enters the aquarium. Avoid large unmeasured additions intended to change pH quickly. Check the aquarium again after water changes because rocks, substrate, feeding and biological activity can all affect the result over time.

Build filtration around the real waste load

A filter is essential. The RSPCA’s aquarium guidance explains that fish release toxic ammonia and that a working biological filter supports bacteria which convert ammonia to nitrite and then to the safer nitrate. For a Malawi community, OATA recommends an oversized filter because the stocking approach can create a substantial waste load.

Mature the aquarium before the Maingano arrives. Follow our first tropical aquarium guide while establishing the filter, then confirm zero ammonia and zero nitrite with tests. Add fish gradually so the beneficial bacterial population can respond to rising waste and feeding. Adding too many animals quickly can overwhelm that capacity and cause new tank syndrome.

Use a repeatable weekly routine

1. Test ammonia and nitrite at least once each week and whenever swimming, breathing, feeding or hiding changes.
2. At least once every week, make a partial water change of 25%.
3. Treat replacement tap water with conditioner to remove chlorine or chloramine before it enters the aquarium.
4. Siphon solid waste from accessible substrate and inspect spaces around the rockwork.
5. Check the filter for blockages and confirm that its output still moves the surface.
6. If filter media needs cleaning, rinse it lightly in aquarium water removed during the water change.
7. Do not run biological filter media under the tap because chlorine or chloramine may kill beneficial bacteria.

Strong aeration is also part of the Malawi plan. Use vigorous surface movement or suitable aeration so the community has dependable dissolved oxygen, particularly where the aquarium is heavily stocked. Position flow so waste moves towards the filter without preventing a subordinate fish from resting behind rock cover.

Keep a simple dated log of water results, water changes and filter work. A trend in nitrate, a slower filter return or repeated debris accumulation gives you an early maintenance decision before fish behaviour changes.

Build rock cover that reduces confrontation

Maingano is a rock-associated mbuna, and the aquarium should make that biology useful. Build several stable structures rather than one isolated ornament. Each structure should create cover, shaded recesses and changes in the direction of travel. The purpose is to give a challenged fish a route away from a dominant resident, not simply to decorate the background.

Check the layout from a fish’s level

• Break long views: look through the aquarium near substrate level and add rock where one fish could otherwise watch the full length.
• Keep routes open: avoid a cave arrangement with only one narrow exit that a dominant fish can guard.
• Secure the base: account for digging before adding the fish, because moving substrate must not destabilise heavy rock.
• Leave feeding access: retain more than one route into open water so every resident has a chance to feed.
• Protect water movement: do not create enclosed debris traps that cannot be siphoned or reached by circulation.

Observe how the structure works after introduction. A brief chase that ends when a fish crosses a rock boundary is different from persistent pursuit through every refuge. If one fish remains pinned near the surface, behind equipment or in a single corner, the layout is not providing usable escape space for that social combination.

Complete major structural work before arrival. Small adjustments can help interrupt a territory, but repeated full rearrangements disturb every resident. Make each change to solve an observed access or aggression problem.

Feed for natural biology and clean water

In the wild, this species typically feeds on zooplankton and epibenthic invertebrates. Build routine aquarium feeding around a complete cichlid food whose main ingredients fit that recorded animal-based diet. OATA’s Malawi-cichlid guidance supplies the portion and frequency: two controlled meals each day, with only as much food as the fish consume within a few minutes.

Set the portion before the food enters the water

Feed twice a day and offer only what the fish can consume within a few minutes. Begin with a small measured amount, watch whether every resident reaches it, and stop once active feeding declines. Uneaten food breaks down and increases the toxic waste that filtration and water changes must handle.

Watch the fish rather than the food alone. One resident may eat rapidly while another remains behind rockwork. A portion can look fully consumed even when a subordinate animal received none. Use more than one feeding point, then confirm that each fish emerges, takes food and returns to cover without being pursued continuously.

If appetite falls, test ammonia and nitrite first and observe breathing, swimming, colour, body condition and social access. OATA identifies reduced food intake as a health warning alongside abnormal swimming, altered breathing, unusual hiding and changes in appearance. Correct an environmental or aggression problem promptly; contact us for health guidance when the change persists or the fish develops visible lesions, white spots, fluffy growths or continuing loss of condition.

Introduce the fish without overloading the aquarium

Prepare the aquarium, filter and rock territories before delivery day. Arrange for someone to receive the parcel because live fish must not be left unattended. Keep the room calm, inspect the animal promptly and follow the delivery and Live Arrival Guarantee policy for the applicable arrival steps.

Follow the store acclimatisation sequence

1. Start filming as soon as the parcel is received, before opening it, with the parcel still sealed and the outer box visible.
2. Open the parcel in one continuous take and show the fish inside the sealed bag before anything is disturbed.
3. Float the bag for 20–30 minutes before releasing the fish.
4. Do not pour the bag water into the aquarium.

Introduction increases both biological and social load. Add livestock slowly so the filter’s beneficial bacteria can respond to additional waste and food. In an established Malawi community, OATA recommends adding fish in groups rather than leaving one newcomer to receive all the attention. It also advises adding more peaceful species before more aggressive species and rearranging décor when a territorial reset is needed.

Normal appearance and behaviour vary between individuals, so look for change rather than expecting every fish to behave identically. OATA highlights surface hanging, bottom sitting, erratic swimming, altered aggression, unusual hiding, faster or slower gill movement, damaged fins, white spots, fluffy growths and reduced feeding as signs requiring attention. Test the water immediately and separate a fish if persistent aggression prevents feeding or causes injury.

Plan groups around aggression rather than colour

Malawi cichlids are aggressive and are not social fish in the ordinary community-fish sense. OATA says they can be kept in groups of at least 15 and slightly overcrowded to spread aggression, while small groups often fight. Treat that as a plan for the complete Malawi community, not as a promise that a particular number of Mainganos will form a stable species group.

A deliberate stocking density only works when the aquarium is at least 200 litres for a reasonable community, the filter has enough biological capacity, aeration is strong and maintenance prevents waste from accumulating. Adding fish to solve conflict can make both aggression and water quality worse when those foundations are missing.

Screen the social plan in this order

1. Water: every proposed resident must suit 23–27°C, pH 8.0–8.6 and hard water.
2. Space: account for the whole community, rock displacement and usable territories.
3. Behaviour: assume aggression is possible and provide several broken sight lines.
4. Sex pressure: OATA advises more females than males where possible, but both sexes of Maingano share blue colouring and this offer does not guarantee sex.
5. Filter load: increase fish numbers only at a pace the mature biological filter can support.
6. Fallback: have a safe separation or rehoming route before conflict occurs.

Do not order two animals and treat them as a pair. A purchase quantity determines how many fish arrive, not their sex or social compatibility. Even a larger planned group can contain an individual that repeatedly excludes another from food and cover.

Screen every potential companion before mixing fish

OATA advises keeping Malawi cichlids only with other Malawi cichlids or with some species of Synodontis catfish that naturally inhabit Lake Malawi. Avoid a general freshwater-community mix. The shared lake label is only the first screen: aggression, adult space, feeding access and the behaviour of each resident still determine whether a combination works.

Use behaviour as the final compatibility test

Watch whether every fish can feed, rest and move between cover and open water. Colourful display, chasing and territory defence are not automatically harmless. Persistent exclusion, damaged fins, lost scales, rapid breathing or declining body condition means the arrangement needs intervention.

When a carefully screened community is introduced, OATA recommends adding the more peaceful species first and more aggressive species later. Adding Malawi cichlids in groups can reduce the chance that one newcomer receives all the aggression. Rearranging décor may interrupt established territories, but filtration and water chemistry must remain stable while the social layout changes.

• Do not treat two fish as a guaranteed compatible pair.
• Do not use colour contrast alone as a compatibility rule.
• Do not add more fish unless filtration, oxygen and weekly maintenance can carry the extra load.
• Do not leave an injured or excluded fish in place while waiting for the group to settle.

Ask us for a stocking and compatibility assessment with the aquarium volume, measured water values, existing fish and planned species. The honest limit is that individual behaviour can still change as fish settle and social pressure develops, so keep the separation plan ready.

Answer the key Maingano questions

What is Pseudotropheus cyaneorhabdos?

It is a freshwater, rock-associated mbuna endemic to Lake Malawi around Likoma Island. FishBase records a maximum of 7.5 cm standard length and lists it in the cichlid family.

Does each purchase quantity mean one Maingano Cichlid?

Yes. Each purchase quantity means one animal of the selected size option; it is not a pair or pack.

Which Maingano Cichlid size choices can I select?

Use the live selector to choose 4 - 5 cm, 6 - 7 cm, 7 - 9 cm or 9 - 13 cm. These are dispatch sizes and do not establish age, sex or adult size.

What setup does this fish need?

OATA’s Malawi-cichlid group guidance recommends an aquarium of at least 200 litres for a reasonable community, with mature filtration, strong aeration, secure rock cover and routes that let fish leave a confrontation.

Should the Maingano Cichlid be kept alone or in a group?

OATA’s Malawi-cichlid group guidance says they can be kept in groups of at least 15 and warns that small groups often fight. Apply that figure to the whole community and plan filtration, territory and separation before choosing numbers.

What water does this fish need?

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

What should I feed a Maingano Cichlid?

Use a complete cichlid food whose main ingredients suit its FishBase-recorded diet of zooplankton and epibenthic invertebrates. OATA’s Malawi-cichlid group guidance says to feed only what it can eat within a few minutes, twice a day.

How should I acclimatise this fish?

Start filming before opening the sealed parcel, keep filming as it is opened and show the fish inside the sealed bag. Then float the bag for 20–30 minutes before releasing the fish, and do not pour the bag water into the aquarium.

Which companions suit this mbuna?

OATA advises screening other Malawi cichlids or some Lake Malawi Synodontis for shared water, space and aggression needs. Avoid general freshwater-community mixes and monitor every combination closely.

Consult the care and identity references

• FishBase: Pseudotropheus cyaneorhabdos — scientific identity, family, Lake Malawi distribution, wild feeding, maximum standard length and conservation status.
• Wikipedia: Pseudotropheus cyaneorhabdos — general natural history, Likoma Island range, rocky habitat and distinguishing colour pattern.
• OATA: How to look after African Malawi cichlids — aquarium water, community volume, feeding, maintenance, introduction and compatibility guidance.
• RSPCA aquarium environment advice — biological filtration and the processing of ammonia, nitrite and nitrate.