Red Dorsal Dogtooth Cichlid (Cynotilapia sp. 'Red Dorsal') – 3–9cm Sizes

Understand the Red Dorsal identity before planning its care

The Red Dorsal Dogtooth Cichlid is a rock-dwelling Lake Malawi mbuna belonging to the accepted genus Cynotilapia in the cichlid family, Cichlidae. It suits prepared keepers who can manage an aggressive Malawi community: OATA's African Malawi cichlid guidance gives 23–27°C, pH 8.0–8.6, general hardness of 12–18°dH and at least 200 litres for a reasonable community. The exact species has not been identified, so the care advice here follows the genus Cynotilapia and its care group. Keep the scientific label Cynotilapia sp. 'Red Dorsal' with the fish rather than assigning it to a named locality or species from its colour.

A Wikipedia account of Cynotilapia describes these fish as haplochromine cichlids within the mbuna flock of Lake Malawi. Mbuna occupy rocky surroundings, and this background explains why territory layout matters alongside water quality. The genus is also described as polygamous and maternal mouthbrooding, with females carrying developing fry for about 20–30 days.

Use the Malawi-group values as the starting framework for this unidentified Cynotilapia, then manage stability, filtration and social pressure as parts of the same plan. Carbonate hardness should remain within 10–15°dKH, while ammonia and nitrite must remain at zero.

Use these figures for the first suitability check

Our intermediate suitability assessment reflects the need to coordinate hard alkaline water, a mature filter, a deliberately chosen Malawi community and an intervention plan for aggression. The routine itself is manageable, but successful care depends on decisions that a peaceful mixed-community aquarium does not usually demand.

Choose the dispatch size without mistaking it for adult size

One purchase supplies one animal from the size option selected on the live selector. Choose between 3–4 cm, 4–5 cm, 6–7 cm and 7–9 cm, and use the quantity control when you want more than one animal. The size you select is the size supplied, not the adult size. These centimetre bands are dispatch sizes, so every choice still needs an aquarium planned around future growth, territory and the complete community.

OATA notes that most Malawi cichlids grow to around 10 cm, while some may grow up to 25 cm. That wide group range makes an assumed final length inappropriate for an unidentified member of Cynotilapia. Use the selected centimetre band only to prepare for arrival and introduction; use the Malawi community requirements, the animal's changing behaviour and conservative long-term space planning for the permanent aquarium.

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

The gallery images are representative, based on reference photographs of this kind of animal, so colours can look slightly different from the live animal. One scene contains two visible fish, but sale quantity is controlled separately: one purchase still means one animal. Treat colour, contrast and fin edging as a guide to the named form rather than a promise that an individual will match a scene exactly.

Check the offer and aquarium separately

• Offer: select the required dispatch size and quantity using the live controls.
• Identity: retain the genus-level name rather than adding a locality or species.
• Space: plan for an adult Malawi community, not the dimensions of a newly dispatched fish.
• Sex: build a stocking plan that does not rely on receiving a particular sex.
• Appearance: expect individual variation rather than selecting solely by illustrated colour.

Before checkout, read the current delivery and Live Arrival Guarantee policy. It explains the confirmed delivery date, tracking, licensed live-animal courier service, hand packing, insulated packaging and the reporting steps that apply if an animal arrives in compromised condition.

Plan the aquarium around a complete Malawi community

Begin with an aquarium of at least 200 litres when planning a reasonable Malawi cichlid community. OATA presents this as a community recommendation rather than a universal minimum for every possible Malawi species or combination. Choose as large an aquarium as reasonably possible because greater water volume generally makes temperature and water quality more stable, while extra usable space gives more choices for territories and escape routes.

A litre figure is only the first screening step. Two aquariums with the same volume can offer very different living conditions: one may provide a useful footprint and several separated rock areas, while another may concentrate every fish into one open line of sight. Select dimensions that let you build distinct areas without filling every swimming route or creating places where water and waste remain trapped.

Work through the space decision in order

1. List the intended community. Include every Malawi cichlid already present or planned, not only the Red Dorsal.
2. Plan for adult fish. OATA says most Malawi cichlids reach around 10 cm, while some may grow up to 25 cm, so research every other named species separately.
3. Map territories. Allow several rock-oriented areas and routes through or around them.
4. Calculate the final waste load. Size the filter for the complete adult community rather than the initial dispatch sizes.
5. Keep an intervention option. A divider, separate suitable aquarium or responsible rehoming route may be needed if a combination becomes unsafe.

A 3–4 cm fish may occupy little physical space at first, but that does not make a small temporary aquarium the right long-term home. Moving an increasingly territorial cichlid later can disrupt both the fish and an established hierarchy. Prepare the permanent scale of aquarium before introduction wherever possible.

If you are developing a new system, use our first tropical tank guide to organise maturation before livestock enters it. The guide supports the general setup process; the hard alkaline water, group structure and aggression decisions on this page still apply to the Red Dorsal.

Stabilise hard alkaline water before introduction

Maintain a temperature of 23–27°C, pH 8.0–8.6, general hardness of 12–18°dH and carbonate hardness of 10–15°dKH. Test the aquarium and tap water rather than judging hardness or alkalinity from appearance. Use the aquarium water chemistry guide to understand each measurement, then compare your readings with the range using the water matcher.

Ammonia and nitrite must remain at zero milligrams per litre. Nitrate should not exceed 20 mg per litre above the normal tap-water level. Record the tap reading as well as the aquarium reading so the nitrate limit has a meaningful baseline. A test result that changes unexpectedly calls for a check of feeding, livestock load, filter flow and recent maintenance before more animals are introduced.

The RSPCA's aquarium filtration guidance explains why a working biological filter is essential: fish release toxic ammonia, beneficial bacteria convert it to toxic nitrite, and further bacteria convert nitrite to safer nitrate. Allow this bacterial population to mature and protect it during cleaning. Clear water alone does not show that ammonia and nitrite are being processed.

Use each result to make a specific decision

Use treated replacement water and keep its temperature and chemistry close to the aquarium. OATA recommends coral sand or a similar substrate to help buffer the water. Choose any buffering approach from actual GH, KH and pH results rather than adding products by guesswork. The aim is repeatable hard alkaline water, not frequent attempts to force an exact decimal.

Build rock territories without sacrificing flow or safety

Mbuna are rock-dwelling fish, so arrange the aquarium around rock-oriented territories, cover and broken sight lines. A useful layout prevents one fish from watching every route at once. Combine sheltered areas with open passages so a subordinate animal can move away from pressure without becoming trapped behind equipment or in a dead end.

Malawi cichlids often dig and rearrange their substrate, which will uproot any plants present. Check every rock arrangement for stability before livestock enters the aquarium, and recheck it whenever digging alters the base. Avoid a layout that can topple when substrate moves. Leave enough access to remove settled waste and inspect fish rather than building an inaccessible solid wall.

Test the layout from the fish's perspective

• Look from each end of the aquarium and identify how much of the opposite side remains visible.
• Add offset barriers where a dominant fish could otherwise patrol the entire aquarium.
• Provide several routes around structures instead of a single narrow exit.
• Keep filter intakes and outlets clear so circulation reaches the whole aquarium.
• Confirm that rocks remain stable when the surrounding substrate is disturbed.

Plants are optional. Digging will uproot any plants present, so only the hardiest plants that tolerate the aquarium conditions and growth method should be considered. Do not reduce essential territory, circulation or swimming space simply to reproduce a planted gallery scene. The fish's rocky mbuna biology and the aquarium's water needs take priority over decorative similarity.

Strong aeration is recommended for a Malawi community, especially where stocking is deliberately managed to distribute aggression. Keep the surface moving and check that circulation reaches around the rockwork. If fish gather at the surface, change their breathing rate or remain beside the outlet, test water quality and inspect aeration immediately rather than assuming the behaviour is social.

Rearranging décor can help reduce aggression by removing established territorial boundaries, but use that step for a clear social reason. Frequent complete redesigns can replace one unstable hierarchy with another. Make the initial structure flexible enough to adjust selected barriers or territories while retaining safe cover and reliable water movement.

Feed small measured meals across the whole group

Use a specialised Malawi cichlid food with a high algae content as the main direction for this mbuna. OATA notes that smaller mbuna are more herbivorous and also appreciate fresh vegetables. Because the Red Dorsal identity remains at genus level, keep the diet aligned with that mbuna guidance rather than switching to the animal-rich feeding described for larger predatory utaka.

Feed twice a day and offer only what the fish can consume within a few minutes. The time limit is practical waste control, not an invitation to keep adding food while a dominant fish continues eating. Start with a modest amount, watch every part of the aquarium and reduce the next meal when food remains uneaten.

Make feeding access part of aggression management

Do not solve leftovers by adding another animal. Uneaten food breaks down and contributes waste that the biological filter must process. A repeated excess also makes weekly nitrate control harder and can hide whether quieter fish are genuinely receiving food.

Fresh vegetable food can add variety within the mbuna plan, but it remains part of the same measured daily allowance. Remove portions that are not eaten promptly enough to stay clean. Keep changes gradual so appetite, waste and water readings can be connected to a clear feeding decision.

Watch the whole group during both meals. Reduced intake is one of OATA's warning signs, while exclusion from food may also reveal aggression before severe external damage appears. Respond to either pattern by checking water values and the social layout rather than simply offering a larger quantity.

Introduce the fish without overloading the filter or hierarchy

Prepare the destination before the animal arrives. Confirm that temperature, pH and hardness sit within the Malawi range and that ammonia and nitrite are zero. Check filter flow, aeration and the intended refuge. A new fish should not be the test of whether a newly prepared aquarium can process waste.

Follow the arrival sequence

1. Receive the parcel: make sure someone is present so the live fish is not left unattended.
2. Film before opening: start a continuous unboxing video while the parcel is still sealed, then record it being opened and the fish still inside the sealed bag.
3. Inspect promptly: inspect the animal on the day it arrives while it remains in the bag.
4. Acclimatise: float the bag for 20–30 minutes before releasing the fish.
5. Release carefully: never pour the bag water into the aquarium.

The permanent aquarium must already be mature and suitable for the selected community. Introducing livestock increases feeding and waste, so the beneficial bacterial population must be able to grow with the load.

Use a staged introduction check

1. Before arrival: test water, inspect equipment and confirm a separation option.
2. At introduction: complete the arrival sequence and release into the prepared Malawi aquarium.
3. During the first observation: watch swimming, breathing, colour, hiding and immediate chasing.
4. At the first meals: confirm that the newcomer can reach food without being pinned away from it.
5. Through the first week: continue checking appetite, body condition, fins, scales and access to cover.

OATA recommends increasing fish numbers slowly because the filter's bacterial population must expand whenever more fish and food are added. Adding too many animals too quickly can cause new tank syndrome, allowing ammonia or nitrite to rise. Where a Malawi stocking plan calls for fish to enter as a group, the mature filter must already be prepared for that combined load.

Within a developing community, introduce more peaceful species before more aggressive species. Adding Malawi cichlids in groups can reduce the chance that all attention falls on one newcomer. Rearranging selected décor may also interrupt established territories, but it does not replace close observation or a separation plan.

Do not judge success from the first calm minutes. Check again during feeding and while established fish patrol their usual areas. If the newcomer remains at the surface, sits on the bottom, swims erratically, hides continuously or cannot feed, test the water and intervene in the social conflict promptly.

Maintain water quality with a repeatable weekly routine

Change 25% of the aquarium water at least once every week. Use a siphon to remove solid waste from the substrate, particularly where debris collects around rockwork. Treat replacement tap water with a conditioner that removes chlorine or chloramine, and keep its temperature and chemistry close to the aquarium.

Test ammonia and nitrite at least weekly and keep both at zero. Record nitrate against the normal tap-water reading, keeping it within 20 mg per litre above that baseline. Continue regular testing in an established aquarium because livestock growth, changing portions, trapped waste or reduced filter flow can alter a previously stable pattern.

Follow one maintenance sequence

Do not run established biological filter media under the tap because chlorine or chloramine may kill beneficial bacteria. Avoid cleaning every part of the filter aggressively at once. The objective is to restore flow and remove excess debris while retaining the bacterial population that processes ammonia and nitrite.

Observe the fish daily for changes in swimming, colour, temperament, breathing, appearance, body condition and feeding. Warning signs include hanging at the surface, sitting on the bottom, erratic swimming, unusual darkening or paling, greater aggression, persistent hiding, altered gill movement, white spots, fluffy growths, damaged fins or scales, weight change and reduced appetite.

If a change appears, test water quality first and compare the affected fish with the rest of the community. A whole-group change points towards an aquarium-wide problem, while one excluded fish may be experiencing concentrated aggression. Contact us for further guidance when health changes continue after the immediate water and social checks.

Manage the community as size and social pressure change

Malawi cichlids can be highly aggressive and are not social fish in the peaceful schooling sense. OATA advises keeping a managed Malawi community in groups of at least 15 and notes that slight overcrowding may distribute aggression. This is a whole-community figure, not an instruction to order 15 Red Dorsals.

Small Malawi groups often fight because one individual can receive repeated attention. A denser community can spread that pressure, but it also increases waste and oxygen demand. Use this approach only within the aquarium's volume, filtration and aeration capacity, with enough observation to identify a fish that is still being targeted.

Where possible, keep more females than males of each species so one female does not receive all male attention. This offer cannot establish that ratio, so plan for the possibility that a growing group develops an unsuitable composition. Do not use colour in the gallery, dispatch size or a fish's early behaviour as a sex guarantee.

Review the group at each change

• After growth: check whether territories and routes still work for larger bodies.
• After an addition: watch where existing fish redirect their aggression.
• After décor changes: identify which fish claim the new areas.
• At feeding: confirm that every animal can reach an appropriate portion.
• After an injury: separate the fish when the existing layout cannot prevent further damage.

A community that appears settled can change as fish mature or territory holders strengthen. Treat persistent hiding, failure to feed, weight loss, torn fins or repeated displacement from cover as reasons to act, not as a normal price of keeping mbuna. Rearranging décor can reset territorial boundaries, but some combinations still require separation.

Plan every new purchase against the complete adult community before using the selector. Group numbers, sex balance, visual similarity, introduction order, aquarium footprint and the behaviour of existing fish all influence the result. The goal is controlled distribution of social pressure, not maximum fish density.

Screen every potential companion before mixing fish

OATA advises keeping Malawi cichlids only with other Malawi cichlids or with some species of Synodontis catfish. Avoid placing this Red Dorsal in a general mixed community outside those categories. Shared temperature alone is not enough; the companion must also fit hard alkaline water, adult space, feeding access and the aggression level of the planned community.

Neither category creates an automatic match. Other Malawi cichlids vary in size and aggression, while only some Synodontis species fit a Malawi aquarium. Research the exact identity and adult requirements of every proposed companion, then assess the complete aquarium rather than relying on a general group name.

Apply the same screen to every candidate

Use the African cichlid collection to compare identities and care requirements, not as a ready-made tank-mate list. Each candidate needs its own assessment. Similar appearance may also concentrate territorial attention, so compare body shape and pattern as well as names.

Ask us for one stocking and compatibility assessment before purchase when the aquarium already contains Malawi cichlids. Include the aquarium volume and dimensions, established species, approximate sizes, group numbers, measured water values and planned additions. Those details allow a meaningful screen; the word “Malawi” by itself does not describe the social pressure in a particular aquarium.

Respond early when aggression stops being manageable

Some chasing is consistent with territorial Malawi cichlids, but sustained exclusion requires action. Watch where the targeted fish ends up and whether it can leave that position. A fish held at the surface, on the bottom, behind equipment or in one corner has lost practical access to the aquarium even when the total litre figure looks generous.

Match the warning sign to the next action

Rearranging décor may reduce aggression because fish must establish new territories. Change selected structures to create new visual barriers and routes, then observe the result. If the same fish is immediately trapped again, further rearrangement is not an adequate welfare plan.

Adding fish simply to distract an aggressor can overload the filter or create another victim. OATA's group recommendation works only as part of a planned Malawi community with appropriate filtration, aeration, space and introduction order. Do not convert it into an automatic remedy for a poor species combination.

Keep a separation route ready before conflict starts. A divider or another suitable mature aquarium can stop physical contact while you reassess the group. Responsible rehoming may be the lasting answer when aquarium dimensions, sex composition or individual behaviour prevent a safe arrangement.

Compatibility remains conditional throughout the animals' lives. Recheck the group after additions, rapid growth, décor changes and any sustained change in temperament. Early action protects the targeted fish and prevents minor damage, poor feeding or repeated hiding from progressing into a more serious welfare problem.

Answer common Red Dorsal care questions

How big does the Red Dorsal Dogtooth Cichlid get?

OATA says most Malawi cichlids grow to around 10 cm, while some may grow up to 25 cm. Use that broad Malawi-group range as a conservative planning reference for this genus-level fish and do not treat its dispatch size as its adult length.

What size aquarium does a Red Dorsal Dogtooth Cichlid need?

OATA recommends at least 200 litres for a reasonable Malawi cichlid community. Choose as large an aquarium as reasonably possible and plan its usable space around the complete adult community, rock territories, filtration and escape routes.

How many Red Dorsal Dogtooth Cichlids should I keep together?

Plan the fish within a managed Malawi community. OATA says Malawi cichlids can be kept in groups of at least 15 to distribute aggression, but that is a whole-community number rather than a direction to keep 15 Red Dorsals.

Is the Red Dorsal Dogtooth Cichlid suitable for beginners?

It is better suited to a prepared keeper who can maintain hard alkaline water, manage an aggressive Malawi community and separate a targeted fish. Our store care assessment is intermediate.

What does this fish eat?

OATA's smaller-mbuna guidance supports specialised Malawi cichlid food with a high algae content and fresh vegetables for the Red Dorsal Dogtooth Cichlid. Feed twice daily and offer only what the group consumes within a few minutes.

What temperature and pH does it need?

OATA's Malawi-group guidance gives 23–27°C, pH 8.0–8.6, general hardness of 12–18°dH and carbonate hardness of 10–15°dKH. Keep ammonia and nitrite at zero.

Is this fish aggressive or likely to damage fins?

Malawi cichlids are aggressive and must be mixed cautiously. Watch for persistent chasing, exclusion from food or cover, damaged fins and altered hiding behaviour, then separate fish when the existing arrangement cannot prevent further harm.

Which animals can live with it?

OATA advises keeping Malawi cichlids only with other Malawi cichlids or some species of Synodontis catfish. Screen every candidate for hard alkaline water, adult space, aggression, feeding access and introduction order, and avoid a general mixed community.

How does this fish arrive alive in the UK?

The Tropical Fish Co policy says fish are hand-bagged in pure oxygen and packed in an insulated box, with a heat pack when the weather calls for it. Be present to receive the parcel. Start filming every delivery continuously while the parcel is sealed, record it being opened and show the fish still inside the sealed bag. Float the bag for 20–30 minutes before release and never pour the bag water into the aquarium.

Consult the reference bibliography

• World Register of Marine Species — accepted genus and family placement for Cynotilapia.
• Wikipedia: Cynotilapia — genus natural history, mbuna association and mouthbrooding biology.
• OATA: African Malawi cichlids — UK group husbandry, water, aquarium, feeding, maintenance and compatibility guidance.
• RSPCA aquarium environment guidance — biological filtration and nitrogen-cycle welfare principles.