Mpangha Rocks Red Top Zebra (Maylandia emmiltos)

Mpangha Rocks Red Top Zebra at a glance

The Mpangha Rocks Red Top Zebra is Maylandia emmiltos, a small cichlid from Lake Malawi that is known in the wild only from the Mpanga Rocks near Chilumba. Its recorded maximum length is 8.4 cm standard length, so it is a compact fish, but it brings the full Malawi cichlid temperament with it. It needs hard, alkaline water, a well-filtered aquarium built around rock, and a planned group of Lake Malawi cichlids rather than a place in a mixed community tank.

Each purchase supplies one fish in the size you choose. The size you select is the size supplied, not the adult size. Young fish have not yet developed their adult proportions, and the larger sizes are already approaching the recorded maximum length for the species.

This is a fish for a keeper who enjoys a busy rock colony, where every fish has a patch of stone it treats as its own. That activity is the appeal, and it is also the reason for the setup rules on this page. OATA, the UK ornamental aquatic trade body, describes Malawi cichlids as colourful, diverse and aggressive, and says they should be mixed with caution; beyond that, it calls them usually undemanding aquarium inhabitants that are easy to keep once the water and stocking are right.

About the name

"Mpangha Rocks" is the trade spelling of the fish's home locality, which reference works write as the Mpanga Rocks. "Red Top Zebra" is a hobby trade name rather than a scientific one. In shops you may also see this fish labelled Metriaclima sp. "Emmiltos" or Maylandia sp. "Emmiltos". FishBase lists the described species as Maylandia emmiltos, which is the name we use.

Choosing a size and planning your order

There are four sizes: 2–3 cm, 4–5 cm, 6–7 cm and 7–9 cm. Not every size can be ordered at every moment, so use the size menu on this page to see which ones can be bought.

• 2–3 cm and 4–5 cm: young fish with growing still to do. Several fish of a similar size, added together, suit a colony that is being built from scratch.
• 6–7 cm and 7–9 cm: fish close to the recorded maximum length. OATA notes that many Malawi cichlids only show differences between the sexes once they are adult, so these larger fish are more likely to show their adult colour than juveniles are.

Because one purchase is one fish, the quantity you enter is the number of fish you receive. Plan that number with the whole colony in mind, and use our African cichlid range to pick out other Lake Malawi species if you are building a mixed Malawi tank.

Before you order

Each item below is explained in the care sections; tick them off before the fish is ordered.

• An aquarium of 200 litres or more, planned as a Malawi cichlid tank rather than a mixed community.
• A filter rated well above the tank's volume, already matured, with ammonia and nitrite reading zero.
• Strong aeration, a heater and a separate thermometer.
• Coral sand or a similar substrate, and plenty of stable rock.
• Your tap water tested for pH, general hardness, carbonate hardness and nitrate.
• A plan for the whole group: how many Malawi cichlids, which species, and in what order they will go in.

Sex is guaranteed only when the selected option explicitly states male or female. This Mpangha Rocks Red Top Zebra listing has no sex-guaranteed option. The fish you receive may be male or female, and colour alone in a young fish is no reliable guide.

The gallery photograph shows a barred fish with a blue head and a golden dorsal fin against a grey rock. Gallery images have been digitally enhanced to improve image quality. Natural colour, pattern, size and maturity can vary between live animals.

Where it lives in the wild

FishBase places Maylandia emmiltos in the cichlid family, Cichlidae, and describes it as a tropical freshwater fish that is demersal, meaning it lives on or close to the bottom rather than out in open water. It is found only in Lake Malawi, and the Wikipedia species summary narrows that further: the species is known only from the Mpanga Rocks near Chilumba. That is a very small natural range, and the trade name keeps that locality in view.

The FishBase species page gives the maximum recorded length as 8.4 cm standard length and lists the conservation status as Least Concern on the IUCN Red List. Wikipedia gives the same 8.4 cm (3.3 in) figure and notes that the species is found in the aquarium trade.

What a rocky home means in the aquarium

OATA loosely splits Lake Malawi cichlids into two groups: the mbuna, which are rock-dwelling species, and the utaka, which swim in open water. Keepers treat the Mpangha Rocks Red Top Zebra as one of the mbuna, a bottom-living fish from a named rocky locality, and that is how the aquarium should be planned:

• Rock first. Build caves and crevices from stable stone so that each fish can find a spot to hold.
• Floor space before height. A bottom-living fish uses the base of the tank, so a long aquarium gives more room for separate rock piles than a tall one of the same volume.
• Hard, alkaline water. OATA sets hard, alkaline values for Malawi cichlids as a group, set out in the water section below.
• A heated, indoor aquarium. FishBase lists it as a tropical fish, so it needs a heated tank all year round.

Planning the tank and the colony

Tank size

OATA recommends an aquarium of at least 200 litres for a reasonable-sized community of Malawi cichlids and advises buying as large a tank as you reasonably can, because a larger volume keeps temperature and water quality more stable. It adds that some more specialist species can be kept in smaller aquariums, so treat 200 litres as the planning figure for a Malawi community that includes this fish, and favour a long footprint over height.

Group size and balance

OATA points out that Malawi cichlids are not social fish and can be highly aggressive, yet the way to keep them peacefully is in numbers. Malawi cichlids kept in small groups will often fight. Its advice is to keep them in groups of at least 15 and slightly overcrowded to limit aggression, so that no single fish becomes the constant target. Where possible, keep more females than males of each species, which stops males harassing one individual female.

Young fish make that balance harder to plan, because many Malawi cichlids only show differences between the sexes once they are adult. Plan the space and rock for the colony you may end up with, and watch the balance as the fish mature.

Equipment that matters most

OATA recommends an oversized filter because Malawi communities are deliberately kept crowded, and aggressive aeration so that there is enough dissolved oxygen for everyone. A heater holds the tank inside the temperature guidance, and a separate thermometer lets you confirm the reading rather than trusting the dial. If this is your first aquarium, our guide to setting up a tropical fish tank walks through filling, heating and maturing the filter before any fish arrive.

Adding fish in stages

Two pieces of OATA advice need to work together. It is best to add Malawi cichlids in groups, so that no individual fish takes all the attention as they settle in. At the same time, the number of fish should only go up slowly, because the bacteria in a matured filter need to increase every time more fish are added and feeding increases. The practical answer is to add fish in batches, several at once, with time between batches for the filter to catch up, testing ammonia and nitrite before each new batch.

Rockwork, substrate and plants

OATA notes that Malawi cichlids will often dig and rearrange the substrate, and that shapes the whole layout.

• Rocks on the glass. Stand the main rocks directly on the aquarium floor and add the sand around them, so that digging cannot undermine a stack.
• Several piles, not one wall. Separate rock piles spread territories across the tank and give a chased fish somewhere else to go.
• Caves of different sizes. Gaps that only a small fish can enter give young or subordinate fish a refuge.
• Open sand between piles. Leave swimming space and room for the digging that will happen anyway.
• Coral sand. OATA suggests coral sand or a similar substrate to help buffer the water.

Plants

Digging also means Malawi cichlids will uproot any plants present, and OATA suggests only the hardiest plants for this kind of tank. A planted aquascape is the wrong home for the Mpangha Rocks Red Top Zebra. If you want some greenery, choose tough plants that can be fixed to rock rather than rooted in the sand, and accept that the fish will rework anything loose.

Changing the layout later

Rock is not only decoration here. OATA advises that re-arranging the aquarium décor can help to reduce aggression, as fish find new territories. Build the layout so that some rocks can be moved safely, which gives you a practical tool if one fish starts to dominate.

Water chemistry and testing

OATA describes Malawi cichlids as a specialised group that needs particular water parameters. Its care sheet for African Malawi cichlids gives these values as a general guide for the group, and they are the values we use for this fish:

These figures describe Malawi cichlids as a group rather than values measured for Maylandia emmiltos alone. OATA itself suggests checking for species-specific needs; for this fish, the sound course is to keep the whole Malawi tank inside these values and hold them steady.

Start with your tap water

Test the water from your tap for pH, general hardness, carbonate hardness and nitrate before you buy any fish. Tap water varies a great deal from one area to another, and the result tells you how much the tank will need to do to stay in range. Our water parameter matcher lets you enter your own readings and compare them with stated guidance, and our guide to aquarium water chemistry explains what each test measures and why it matters.

Reading the nitrate limit

OATA's nitrate figure is relative to your tap water, not a fixed number. If your tap reads 10 mg per litre, the tank should stay at or below 30 mg per litre; if your tap reads 25 mg per litre, the ceiling is 45. Test the tap and the tank on the same day with the same kit so the two readings are comparable, and let the weekly water change bring the tank back down when it creeps up.

Keep it steady

• Set the heater within 23–27°C and leave it there, checking the thermometer when you feed.
• Test ammonia and nitrite at least once a week; OATA warns that Malawi cichlids can be stressed by even the smallest amounts of ammonia.
• Test pH and carbonate hardness regularly, because carbonate hardness is what holds the pH steady between water changes.
• Use coral sand or a similar substrate to help buffer the water, as OATA suggests.

Filtration and weekly maintenance

The RSPCA's guidance on the aquarium environment is plain: no fish should be kept in a tank without a well set up and maintained filter. Fish release ammonia, which is toxic. A working biological filter lets beneficial bacteria grow, and those bacteria convert ammonia to nitrite, which is also toxic, and then to nitrate, which is safer. In a crowded Malawi tank that process runs hard all the time, which is why OATA recommends an oversized filter for these communities.

The weekly routine

1. Test the water for ammonia and nitrite at least once a week; both should read zero.
2. Carry out a partial water change of 25% at least once every week, using a siphon to lift solid waste from the sand.
3. Treat the replacement water with a tap water conditioner to remove chlorine or chloramine before it goes into the tank.
4. Check the filter for blockages.
5. If the filter media needs cleaning, rinse it lightly in the tank water you have just removed. Do not run it under the tap, because any chlorine or chloramine present may kill the beneficial bacteria living in the media.

A worked example

In a 200-litre Malawi tank, a 25% change is 50 litres each week. Siphon it from the sand around the rock piles, where waste collects, treat 50 litres of fresh water with conditioner, and refill. Rinse filter media in a bucket of the water you removed rather than at the sink. Keep a simple log of the date, the ammonia, nitrite and nitrate readings and anything unusual you noticed; over a few weeks the log shows whether your routine is keeping up with the colony.

When the readings drift

A rising nitrate reading between changes usually means more waste is going in than the routine removes. Check feeding first, then stocking. Any ammonia or nitrite reading above zero needs attention before you add more fish: test again, confirm the filter is running freely, and hold back new additions until both read zero.

Feeding the Mpangha Rocks Red Top Zebra

OATA explains that the dietary needs of Malawi cichlids vary. The smaller mbuna species are more herbivorous and appreciate both specialised Malawi cichlid feeds with a high algae content and fresh vegetables, while some of the larger utaka species are more predatory and need pellets with a higher animal content. As a compact mbuna, the Mpangha Rocks Red Top Zebra belongs with the first group, so build its diet around an algae-rich Malawi cichlid food and add fresh vegetables for variety.

How much and how often

OATA advises feeding Malawi cichlids only what they can eat within a few minutes, twice a day. Overfeeding leaves uneaten food that breaks down and releases toxic waste into the water, so it is better to give a little less and watch than to scatter extra.

• Watch the whole group at feeding time, not just the boldest fish, so you notice one that stops eating.
• If food is still lying on the sand after a few minutes, feed less at the next meal.
• Take out uneaten vegetable pieces before they start to break down.
• Spread food across the tank so that a fish holding a territory near the front cannot claim every mouthful.

Foods meant for other Malawi cichlids

The pellets with a higher animal content and the frozen brine shrimp, prawns or cockles that OATA mentions are advice for the larger, more predatory utaka. They are built for a different kind of Malawi cichlid, so keep the Mpangha Rocks Red Top Zebra on the algae-rich side of the menu. If you are unsure which food suits your particular mix of species, ask us before you buy.

Feeding and water quality

Feeding is the part of the routine that most directly changes water quality. Each extra pinch becomes waste for the filter, which is why the weekly nitrate reading is a useful check on your portions. If nitrate climbs faster than usual, look at how much food is going in before anything else.

Arrival day and the first weeks

Your fish is hand-packed by our team, bagged in pure oxygen inside an insulated poly box, with a heat pack when the weather calls for it, and carried by a licensed live-animal courier. We email you the tracking number and the confirmed delivery date so that you know when to be in. The full terms are on our delivery and Live Arrival Guarantee page; these are the steps that matter on the day.

1. Be at the delivery address to receive the parcel. Live fish cannot be left unattended, and the guarantee requires someone to be there to receive it.
2. Before you open anything, start a continuous unboxing video with the parcel still sealed and the outer box visible. For any Live Arrival Guarantee claim, a short unboxing video is needed: parcel still sealed, then opened, with the fish still inside the sealed bag.
3. Open the parcel and inspect the fish the same day it arrives, keeping the camera running in one continuous take until the fish can be seen in the bag.
4. Float the sealed bag in the aquarium for 20–30 minutes so that the fish acclimatises slowly.
5. Release the fish gently into the tank. Never pour the bag water into your aquarium.
6. If anything has gone wrong, contact us the same day with your order number and the unboxing video. WhatsApp is the fastest way to reach us, and we will arrange a replacement or refund.

Before the fish goes in

Check that ammonia and nitrite both read zero before adding any fish. OATA explains why: overstocking or stocking too quickly can result in new tank syndrome, when there are not enough nitrifying bacteria to cope with the increased waste from the fish, leading to unhealthy levels of ammonia and nitrite, which may cause fish to become ill or die.

The first weeks

• Add Malawi cichlids in groups, with the more peaceful species first and the more aggressive species later.
• Keep testing ammonia and nitrite at least weekly, and before each new batch of fish.
• Watch newcomers at every feed for the warning signs in the next section.
• If one fish is being singled out, re-arrange some of the rockwork so that territories are redrawn.

Health checks and warning signs

OATA lists the signs of a healthy fish: clear, bright eyes, undamaged fins, intact scales, no ulcers or bumps, and appropriate swimming. It also lists the changes worth watching for, because spotting them early helps you act before a problem becomes a real health issue.

A daily look and a weekly check

The easiest moment to check a Malawi colony is feeding time, when most fish come out from the rock. Count the fish, look at each one's fins and colour, and note any fish that does not come forward. A weekly check adds the water tests and the water change.

When something looks wrong

OATA's advice is to test your water quality first, then seek guidance. In a crowded Malawi tank a change in temperament is worth reading alongside the stocking: a fish that suddenly hides far more than normal can be under pressure from tank mates as well as from the water, and the group size, rock layout and balance of males and females covered in the compatibility section are part of keeping the colony healthy. If you are concerned about any fish you bought from us, contact us with your water test results.

Choosing companions

OATA's rule is short: Malawi cichlids should only be kept with other Malawi cichlids or some species of Synodontis catfish, which also naturally inhabit Lake Malawi. That rules out the usual community fish, and it means the Mpangha Rocks Red Top Zebra is chosen as part of a Malawi tank rather than added to an existing mixed aquarium.

Building a Malawi mix

• Choose other Lake Malawi cichlids that share the same water guidance.
• If you add catfish, choose a Synodontis species that also comes from Lake Malawi, as OATA specifies; the genus is not limited to the lake.
• Add the more peaceful species first and the more aggressive species later, as OATA recommends.
• Add fish in groups rather than one at a time, so no individual receives all the attention while it settles.
• Keep the tank slightly overstocked, within what your filtration can handle, so that aggression is spread across the population.

Managing aggression

Aggression in a Malawi tank is normal, and the aim is to spread it thinly rather than remove it. OATA's tools are numbers, balance and layout: a group of at least 15, slight overcrowding, more females than males of each species, and re-arranging the aquarium décor so that fish find new territories. If one fish is being singled out, move several rocks at once so that everyone has to find a new spot, and check that the tank is not under-stocked after losses.

OATA notes that the main sex difference in Malawi cichlids is colour or the presence of egg spots on the males' anal fin, and that many fish only show these differences as adults. As a group matures, count how many fish show male colour and markings; if males outnumber females, harassment of individual females becomes more likely, and the balance needs attention.

Fish and set-ups to avoid

Following OATA's advice that Malawi cichlids should only be kept with other Malawi cichlids or suitable Lake Malawi Synodontis, leave these out of the plan:

• Fish from outside Lake Malawi. This includes typical soft-water community fish such as tetras, and cichlids from other lakes and rivers.
• Invertebrates and delicate bottom fish. They fall outside OATA's list of suitable companions for a Malawi tank.
• A small group, or a lone Malawi cichlid in a mixed tank. Malawi cichlids kept in small groups will often fight.
• A planted display. Digging will uproot plants, as described in the layout section.
• An immature tank. A new filter cannot keep up with a crowded colony.

If you already keep Malawi cichlids

Adding the Mpangha Rocks Red Top Zebra to an established Malawi tank is possible, but the settled fish already hold the territories. Add newcomers as a group, re-arrange some rockwork on the same day so that territories are redrawn for everyone, and watch the first few feeds closely. Keep to OATA's order of adding more peaceful species before more aggressive ones when you plan where this fish fits.

A stocking sequence for a new Malawi tank

1. Mature the filter and confirm that ammonia and nitrite both read zero.
2. Write down the species you want: Lake Malawi cichlids only, plus a Lake Malawi Synodontis if you want a catfish.
3. Put them in order from the most peaceful to the most aggressive, as far as you can judge from each species' own care guidance.
4. Add the most peaceful species first, as a group.
5. Test the water, give the filter time to catch up, then add the next group.
6. Add the most aggressive species last, and aim to finish slightly overstocked rather than under.
7. As the fish mature, check the balance of males and females and adjust the layout if one fish is being singled out.

Questions keepers ask

How big does the Mpangha Rocks Red Top Zebra get?

FishBase records a maximum length of 8.4 cm standard length for this species, and Wikipedia gives the same figure. It is a compact cichlid, but it needs the same space, water and group planning as any Lake Malawi colony.

What size aquarium does Maylandia emmiltos need?

Plan it as part of a Malawi cichlid community. OATA recommends an aquarium of at least 200 litres for a reasonable-sized community of Malawi cichlids and advises buying as large a tank as you reasonably can, with an oversized filter, strong aeration and plenty of rock.

How many should I keep together?

OATA advises keeping Malawi cichlids in groups of at least 15, slightly overcrowded to limit aggression, with more females than males of each species where possible. Malawi cichlids kept in small groups will often fight, so plan the whole colony before you buy.

Is the Mpangha Rocks Red Top Zebra suitable for beginners?

It can be, if the beginner sets up a dedicated Malawi cichlid tank. OATA describes Malawi cichlids as usually undemanding and easy to keep, but also as aggressive fish with specialised water needs that should be mixed with caution. It is not a fish for a general community tank.

What does Maylandia emmiltos eat?

Feed a specialised Malawi cichlid food with a high algae content, plus fresh vegetables, as OATA advises for the smaller, more herbivorous mbuna. Give only what the group can eat within a few minutes, twice a day, and take care not to overfeed.

What temperature and pH does it need?

OATA's care sheet for Malawi cichlids as a group gives 23–27°C, pH 8.0–8.6, general hardness of 12–18 dGH and carbonate hardness of 10–15 dKH. Keep ammonia and nitrite at zero and hold the values steady rather than letting them swing.

Is the Mpangha Rocks Red Top Zebra aggressive?

Yes. OATA describes Malawi cichlids as aggressive fish that are not social and can be highly aggressive. Aggression is managed with a group of at least 15, slight overstocking, more females than males, plenty of rock and by adding fish in groups rather than one at a time.

What fish can live with Maylandia emmiltos?

Only other Lake Malawi cichlids, or some species of Synodontis catfish that also come from Lake Malawi, following OATA's advice. Add the more peaceful species first and the more aggressive ones later.

How does the Mpangha Rocks Red Top Zebra arrive alive in the UK?

It is hand-packed, bagged in pure oxygen in an insulated poly box with a heat pack when the weather calls for it, and carried by a licensed live-animal courier on the delivery date we confirm by email. Someone must be in to receive it. Film a continuous unboxing video from the sealed parcel, which any Live Arrival Guarantee claim needs, then float the bag for 20–30 minutes before releasing the fish.

Sources and further reading

• FishBase: Maylandia emmiltos species summary for the family, habitat type, distribution, maximum recorded length and IUCN status.
• Wikipedia: Maylandia emmiltos for the known range at the Mpanga Rocks near Chilumba and the recorded length.
• OATA: How to look after African Malawi cichlids for the group water values and the advice on tanks, stocking, feeding, maintenance, health checks and companions.
• RSPCA: fish environment for filtration and the nitrogen cycle.
• Tropical Fish Co delivery and Live Arrival Guarantee page, linked in the arrival section, for packing, courier and claim requirements.