Dinghani Yellow Mbuna (Pseudotropheus flavus)

Understand this Lake Malawi mbuna

The Dinghani Yellow Mbuna (Pseudotropheus flavus) is a freshwater cichlid from Lake Malawi in Africa. It belongs to the family Cichlidae, lives around rocky habitat and reaches 7.6 cm standard length. Its specialised water requirements and territorial Malawi-community behaviour make it most suitable for a keeper prepared to manage hard, alkaline water, substantial filtration and carefully chosen companions.

FishBase records the species from Lake Malawi, where it inhabits the rocky biotope. In nature it feeds mainly on plankton in open water, and large foraging schools may hover about one metre above the substrate while feeding. These observations explain why the aquarium needs both rock structure and open water rather than a solid wall of decoration.

FishBase now lists it as Chindongo flavus and treats Pseudotropheus flavus as a synonym. The familiar mbuna name remains useful because OATA describes mbuna as the rock-dwelling branch of Malawi cichlids. This is an active territorial cichlid rather than a peaceful general-community fish, even though Seriously Fish describes it as not especially aggressive for a mbuna.

Check the decisive care numbers

Plan on at least 154 litres with a base measuring 90 × 45 cm. Seriously Fish recommends those species-level dimensions, giving enough floor area for rock piles, caves and open water. A reasonable Malawi community needs a larger plan: OATA recommends at least 200 litres and says Malawi cichlids can be kept in groups of at least 15.

Keep routine water at 24–27°C, pH 8.0–8.4 and 12–18 dGH. These figures are the overlap of FishBase’s recorded environment, Seriously Fish aquarium guidance and OATA’s Malawi guidance. Maintain ammonia and nitrite at zero, and do not let nitrate rise more than 20 mg per litre above the normal tap-water level.

Choose the dispatch size with the adult plan ready

One purchase supplies one Dinghani Yellow Mbuna. Use the live size selector to choose 3–4 cm, 4–5 cm, 6–7 cm or XL. The size you select is the size supplied, not the adult size. Plan the aquarium around the recorded adult length, full territorial layout and intended Malawi community rather than treating a smaller dispatch fish as suitable for a smaller permanent home.

Sex is guaranteed only when the selected option explicitly states male or female. This Dinghani Yellow Mbuna listing has no sex-guaranteed option. Do not use colour, dispatch size or gallery appearance to decide the sex of the fish supplied. If a future group plan depends on a precise male-to-female ratio, assess the fish as reliable differences develop and be prepared to adjust the group.

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 the images to understand the general yellow mbuna form and markings, while judging the live fish by its own colour, condition and behaviour.

Build around rocks, caves and floor space

Start with an aquarium of at least 154 litres and a 90 × 45 cm base. The base measurement matters because territorial fish use horizontal space around rocks and openings; volume alone does not show whether the layout has enough usable floor area. Seriously Fish also gives 9 cm standard length as an aquarium planning reference, compared with FishBase’s recorded maximum of 7.6 cm standard length. Use the 7.6 cm recorded maximum consistently, but leave enough room for normal variation and territorial movement.

Create distinct rock areas

Arrange much of the aquarium as stable piles of rock that form caves, with small open-water areas between them. Keep each structure secure because OATA notes that Malawi cichlids often dig and rearrange the substrate. A sandy substrate follows the species guidance and allows that digging without depending on delicate planted areas.

• Rock piles: provide caves and separated areas rather than one exposed shelter.
• Open water: leave clear passages between structures so fish can move away from one another.
• Substrate: use sand or a similar Malawi-suitable substrate; OATA recommends coral sand or a comparable material to help buffer the water.
• Plants: use only hardy plants that tolerate disturbance, and secure them against digging.

Before filling the aquarium, mark out the 90 × 45 cm base and place the main rock piles within it. Check that caves remain accessible and that open passages still connect the layout after the rocks are installed. If the decoration fills every passage or leaves only one usable cave, simplify it before the fish arrives. The aim is a structured rocky aquarium with several places to move through, not the greatest possible quantity of stone.

Do not discourage natural algae growth on the rocks, because Seriously Fish notes that the fish will browse it. This does not replace deliberate feeding, and algae should not be allowed to become an excuse for missed water changes or excess nutrients.

Prepare and mature the aquarium before the fish arrives. Our first tropical aquarium guide explains how to establish the filter and confirm that the system can process waste before livestock is introduced.

Hold the water inside the shared range

Keep the aquarium at 24–27°C, pH 8.0–8.4 and 12–18 dGH. These routine values are the overlap of FishBase’s recorded environment, Seriously Fish species guidance and OATA’s Malawi guidance. OATA’s figures are group guidance, not a species-specific optimum, so the narrower shared range is the practical target for this fish.

Measure the aquarium rather than assuming the tap-water label or local reputation tells you what reaches the fish. Our water chemistry guide explains temperature, pH, hardness and nitrogen waste, while the water matcher helps compare your readings with the target range.

Use a simple decision sequence

1. Measure temperature, pH and general hardness in the established aquarium.
2. Confirm that ammonia and nitrite are both zero before adding fish.
3. Keep nitrate from exceeding 20 mg per litre above its normal tap-water level.
4. Make adjustments gradually and re-test before deciding that the water is stable.
5. Treat replacement tap water with a conditioner that removes chlorine or chloramine before adding it.

A reading of 25°C, pH 8.2 and 15 dGH sits within all three routine ranges, but ammonia or nitrite above zero still makes the aquarium unsuitable for an addition. Conversely, zero ammonia and nitrite do not compensate for acidic or soft water. Check the whole set of readings together, because temperature, mineral content and biological filtration answer different care questions.

If a reading falls outside the routine range, identify whether the change came from replacement water, substrate, decoration, biological waste or an equipment problem. Correct the cause without chasing readings through repeated abrupt changes. Stability matters, but stability outside the required hard, alkaline range is not a substitute for suitable water.

Record weekly readings alongside maintenance. A simple log makes gradual pH movement, rising nitrate or a heater problem easier to identify before behaviour and appetite change.

Size filtration for a busy Malawi community

Use a mature, well-maintained biological filter and provide strong aeration. The RSPCA explains that fish release toxic ammonia, which beneficial filter bacteria convert first to nitrite and then to the safer nitrate. OATA recommends an oversized filter and aggressive aeration for the crowded conditions used in Malawi communities.

For the 154-litre species plan, Seriously Fish recommends turnover of four to five times the aquarium volume each hour, equivalent to a filter rating of about 615–770 litres per hour. Treat the manufacturer’s rating as a starting point: rockwork, loaded media and accumulated debris affect real flow. Arrange outlets so the surface moves and oxygen exchange remains strong without leaving waste trapped behind the rocks.

Follow the weekly maintenance cycle

• At least once every week, change 25% of the water.
• Use a siphon to remove solid waste from accessible substrate and around rock bases.
• Test ammonia and nitrite at least once per week, and monitor nitrate against the stated limit.
• Check the filter for reduced flow or blockages.
• Treat replacement water for chlorine or chloramine before it enters the aquarium.

Use the normal filter flow as a comparison point. If surface movement weakens, debris gathers where it did not before or the outlet flow drops, check for blockages before increasing feeding or adding fish. After cleaning, confirm that circulation has returned and test ammonia and nitrite. A filter that is running but moving less water may not be giving the planned turnover or aeration.

If filter media needs cleaning, rinse it lightly in aquarium water removed during the partial water change. Do not run it under the tap, because chlorine or chloramine may kill the beneficial bacterial population established in the media. Avoid cleaning every part of the filter and undertaking major disruptive work in the aquarium at the same time.

After adding fish, increase feeding and livestock numbers slowly. OATA warns that the bacterial population must grow as waste production rises; adding too many fish too quickly can cause new tank syndrome, with ammonia and nitrite reaching harmful levels. Test after each stocking change and pause further additions until both remain at zero.

Feed for recorded plankton use and controlled variety

Make appropriately sized plankton-based food the principal staple. FishBase records that this species feeds mainly on plankton in open water in nature, so the main food should reflect that biology rather than relying on an algae-only staple. Feed where every fish can reach the food, then watch whether territorial pressure prevents a quieter individual from eating.

Seriously Fish also recommends that vegetable matter form a large proportion of the aquarium diet, naming spirulina flakes, blanched spinach and nori, with live and frozen varieties used as supplements. A quality dried product can therefore be combined with vegetable material and suitable live or frozen variety. Never feed beefheart or any other animal meat, because Seriously Fish warns that it interferes with the digestive system of these fish.

Use the same portion rule at every meal

• Feed twice a day, following OATA’s Malawi feeding guidance.
• Offer only what the fish can eat within a few minutes.
• Distribute food across more than one point if a territorial fish blocks access.
• Remove obvious uneaten food before it breaks down.
• Vary suitable foods without making every meal larger.

At the first meal, watch the whole aquarium until the food is gone. If every fish feeds and nothing remains after a few minutes, keep the portion steady rather than increasing it automatically. If food remains, reduce the next serving. If one fish misses the meal while the others eat, spread the same portion across separate feeding points and check whether rock territories are preventing access.

Judge the portion by the group’s response, not by a fixed pinch. If food reaches the substrate untouched, reduce the next portion. If one fish remains excluded while others finish quickly, spreading the same amount over a wider area is a better first action than adding more food. Persistent exclusion is a compatibility or layout problem rather than a reason to overfeed the whole aquarium.

Check body condition and appetite during routine observation. Reduced intake can be an early warning of water-quality trouble, social pressure or ill health. Test ammonia and nitrite immediately when appetite changes, and review the recent feeding amount, filter flow and stocking changes.

Watch behaviour before problems grow

Observe the aquarium every day during feeding and again when the fish are moving normally around the rockwork. Healthy fish should have clear, bright eyes, intact scales, undamaged fins and swimming behaviour appropriate to the species. A single snapshot is less useful than noticing a change from the fish’s usual pattern.

Respond to changes directly

Compare several signs before deciding what to do next. A fish that hides briefly but still eats and emerges without damage needs observation; a fish that hides, misses meals and develops damaged fins needs prompt action on the social arrangement. When unusual breathing accompanies either pattern, test water quality and aeration immediately rather than treating it only as a territorial issue.

Keep weekly notes on appetite, breathing, colour and territorial activity. This establishes the normal pattern for your aquarium and helps distinguish a brief reaction to maintenance from a continuing decline. Do not medicate from appearance alone; different problems can produce similar signs, and treatment choice requires an accurate diagnosis.

When aggression rises after an addition, confirm that the combination follows the compatibility plan and that the filter has adjusted to the extra waste. OATA recommends rearranging aquarium décor to help reduce aggression as fish establish new territories. Continue checking fins and feeding access while the group settles.

Introduce fish without overloading the filter

Add livestock only after ammonia and nitrite both test at zero and the aquarium is within 24–27°C, pH 8.0–8.4 and 12–18 dGH. Increase the population slowly enough for beneficial bacteria to respond to the extra waste and feeding. A mature aquarium is still vulnerable if a large biological load is added faster than its filter can adapt.

For Malawi communities, OATA recommends adding cichlids in groups so one individual does not receive all the aggression while settling. Add more peaceful species before more aggressive species and rearrange décor when necessary to disrupt established territories. These steps do not make an unsuitable combination safe; complete the compatibility screening first.

Use first-week checkpoints

• Before introduction: confirm the water range, zero ammonia, zero nitrite and normal filter flow.
• At feeding: check that every fish reaches food without one individual being trapped away from it.
• Each day: inspect fins, scales, breathing, swimming and use of caves.
• After a stocking change: test ammonia and nitrite more frequently and make no further additions while either is detectable.
• After territorial changes: watch whether chasing ends with room to retreat or continues until a fish cannot feed or leave cover.

Use the first stable week as the starting point for the next decision, not as a deadline for another addition. Continue only when ammonia and nitrite remain at zero, the existing fish all reach food and no individual is accumulating damage. If one of those checks fails, pause the stocking plan and correct water quality, layout or compatibility before increasing the biological or social pressure.

If a fish is repeatedly confined to one corner, excluded from food or showing new damage, act before the pattern becomes established. Recheck the fish mix, numbers, aquarium footprint and rock arrangement. A larger water volume helps stability, but usable territories and correctly screened companions remain essential.

Follow the arrival procedure in order

Receive the parcel in person and begin filming while it is still sealed. Keep the outer box visible, open it in one continuous take and show the fish inside the sealed bag before anything is disturbed. This video supports any Live Arrival Guarantee claim and must begin before the parcel is opened.

1. Receive the parcel so the live fish is not left unattended.
2. Start filming the sealed parcel with the outer box visible.
3. Open and inspect it the same day, continuing the recording until the fish is shown inside the sealed bag.
4. Float the bag for 20–30 minutes before releasing the fish.
5. Do not pour the bag water into the aquarium.
6. For a claim, contact us the same day with the order number and continuous unboxing video.

The fish is hand-bagged in pure oxygen and placed in an insulated poly box, with a heat pack when the weather calls for it. Keep the destination aquarium ready before opening the parcel so the tested temperature, pH, hardness and filtration are already within the required range.

Read the current delivery and Live Arrival Guarantee policy before the delivery date. It explains the reception, filming, acclimatisation and claim requirements in their full context.

Plan the whole Malawi group before choosing companions

Treat this as a Malawi-community fish, not a peaceful mixed-community cichlid. OATA describes Malawi cichlids as aggressive and says they should only be kept with other Malawi cichlids or some species of Synodontis catfish that also naturally inhabit Lake Malawi. Seriously Fish narrows the suitable cichlid choice for this species to similarly sized mbuna.

For a reasonable Malawi community, use at least 200 litres. OATA says Malawi cichlids can be kept in groups of at least 15 and slightly overcrowded to limit aggression, while small groups will often fight. Slight overstocking creates a high filtration and oxygen demand, so it must be planned with the aquarium volume, oversized filter, aeration and weekly maintenance rather than achieved through rapid additions.

Plan sex ratios only when sex is known

Seriously Fish recommends several females per male to reduce harassment and only one male unless the aquarium is very large. Because this offer does not guarantee sex, do not assume a purchased set creates that ratio. Watch for reliable adult differences and adjust the plan if one fish receives persistent attention.

Add fish in a controlled sequence

• Screen every species for adult size, Malawi water requirements, diet and temperament.
• Add Malawi cichlids in groups rather than leaving one newcomer to receive all the aggression.
• Add more peaceful species before more aggressive species.
• Rearrange rockwork when introducing fish so established territories are disrupted.
• Confirm that ammonia and nitrite remain zero before making another addition.

Work through candidates one at a time. A similarly sized mbuna passes the first category check but still needs matching water, space, diet and temperament. A Peacock or Utaka fails because Seriously Fish places it in the avoid group for this species. A Lake Malawi Synodontis reaches only the consideration stage until its individual requirements and the aquarium plan have been checked.

Individual combinations remain uncertain until aquarium size, numbers and temperaments are considered together. Ask us for a stocking assessment that includes the aquarium dimensions, current fish, planned additions and measured water values.

Avoid the specific conflicts named for this mbuna

Keep the Dinghani Yellow Mbuna only in a carefully screened Malawi plan. Similarly sized mbuna may suit after water, space, diet and temperament have all been matched. Some Lake Malawi Synodontis species may also be considered individually under OATA’s guidance, but the group name alone does not make every Synodontis suitable.

The prohibition on Pseudotropheus elongatus and its group is unconditional. Seriously Fish warns that hybridisation may occur and that males can clash heavily. Do not place these fish together after screening or rely on extra rockwork to remove that conflict.

Peacocks and Utaka also remain unsuitable here. Although they are Malawi cichlids, Seriously Fish describes them as equally peace-loving species that should not be kept with this mbuna. Likewise, “other mbuna” is not a universal approval: the suitable rule is similarly sized mbuna, followed by a complete check of behaviour and requirements.

Act on the result of the screen

If a candidate appears in the avoid column, choose a different fish rather than trying to offset the conflict with more caves or a larger filter. If it appears in the consideration column, complete every check before purchase and observe feeding access and fin condition after introduction. Filtration can manage waste, but it cannot make an explicitly unsuitable pairing compatible.

You can compare the broader African cichlid collection when planning, but make the compatibility decision from the specific requirements of every fish. After introduction, monitor chasing, feeding access, breathing and fin condition; intervene if one individual cannot leave cover, reach food or escape repeated attacks.

Answer common buyer questions

How big does the Dinghani Yellow Mbuna get?

FishBase records a maximum of 7.6 cm standard length. Plan its permanent aquarium around that adult figure, territorial rockwork and the intended Malawi group rather than the smaller dispatch size.

What size aquarium does a Dinghani Yellow Mbuna need?

Use at least 154 litres with a base of 90 × 45 cm for the species. For a reasonable Malawi community, OATA recommends at least 200 litres.

How many Dinghani Yellow Mbuna should I keep together?

OATA says Malawi cichlids can be kept in groups of at least 15 and that small groups will often fight. Seriously Fish recommends several females per male and one male unless the aquarium is very large; sex is not guaranteed in this offer.

Is the Dinghani Yellow Mbuna suitable for beginners?

OATA describes Malawi cichlids as usually undemanding and easy to keep, but a beginner must still provide hard alkaline water, at least 154 litres, strong filtration and a carefully screened aggressive community.

What does the Dinghani Yellow Mbuna eat?

FishBase records mainly plankton in its wild diet, so use appropriately sized plankton-based food as the principal staple. Include vegetable matter such as spirulina flakes, spinach or nori, feed twice daily within a few minutes and never feed beefheart or other animal meat.

What temperature, pH and hardness does it need?

Keep it at 24–27°C, pH 8.0–8.4 and 12–18 dGH, the overlap of FishBase, Seriously Fish and OATA guidance. Maintain ammonia and nitrite at zero.

Is this fish aggressive, and will it damage fins?

It is not especially aggressive for a mbuna, but Malawi cichlids are aggressive and small groups will often fight. Use rock piles, caves and carefully screened companions, then check daily for persistent chasing, exclusion from food and damaged fins.

Which animals can it live with?

Consider similarly sized mbuna after matching water, space, diet and temperament, or individually screened Synodontis species from Lake Malawi. Avoid large mbuna, very boisterous fish, Peacocks, Utaka, Pseudotropheus elongatus and every species in its group.

How is it packed, and what should I do when it arrives?

Film the sealed parcel before opening it or floating the bag. It is hand-bagged in pure oxygen and insulated, with a heat pack when weather calls for it; open and inspect it the same day, float the bag for 20–30 minutes, and do not pour bag water into the aquarium.

Check the public references

• FishBase: Chindongo flavus — accepted name, family, Lake Malawi distribution, recorded environment, wild biology and maximum recorded length.
• Seriously Fish: Pseudotropheus flavus — aquarium dimensions, water conditions, layout, feeding and species compatibility.
• OATA: African Malawi cichlids — group water values, aquarium management, feeding, maintenance and community planning.
• RSPCA: aquarium environment — biological filtration and nitrogen-waste management.