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Malawi Eyebiter

Dimidiochromis compressiceps (Boulenger, 1908)

Also called Malawi Eye-biter, Compressiceps, Paratilapia compressiceps

A calm, watchful predator that is peaceful with fish too big to swallow; males become territorial when spawning.

SizeLarge
Length23 to 25 cm (9 to 10 in)123
CoatVery flat-sided, long-snouted predator
OriginLake Malawi, Lake Malombe and the upper Shire River in East Africa (Malawi, Mozambique and Tanzania), mainly in shallow, vegetated areas.13
Last checked2026-09-30
SpeciesShort profile
Unique blade-thin body shape
Gorgeous metallic males
Fascinating ambush hunter
32

Personality what they are like

A calm, watchful predator that is peaceful with fish too big to swallow; males become territorial when spawning.23

The care rhythm a typical week and year

A typical home-care rhythm for a Malawi Eyebiter. A starting point, not a vet's advice.

  • FeedingSmall amounts once or twice a dayevery day
  • Temperature checkevery day
  • Water changeAbout 25% of the waterevery week
  • Water testevery week
  • Glass cleanevery week
  • Filter rinseRinse in old tank water, never tap waterevery month

Looks how to spot one

Very flat-sided, long-snouted predator

A strikingly thin, blade-like cichlid with a long head and pointed snout, built to slip unseen between plants.13

Colourssilvery white with a brown side stripe (females and young)metallic blue with red and orange fins (mature males)albino form in the hobby32

Daily activity how busy a day looks

Hovers quietly among cover and makes swift dashes; appreciates both open water and sheltered spots.32

Grooming and care the hands-on bits

Sand substrate, some cover or tall decor, and roomy water with strong filtration.21

Home where they are happiest

At least 150 x 38 cm base (about 257 litres), 22 to 28 C, pH about 7.5 to 8.8 and 9 to 25 dGH.21

Food basics what goes in the bowl

A fish-eater; feed meaty frozen foods such as prawn, mussel and cockle, with pellets only as an extra.21

Company who they like around

Keep with fish longer than about 12 cm; breeding groups should have more females than males.2

The story where it all began

George Boulenger described the species in 1908, naming it for its compressed head. It moved through several genera before being placed in Dimidiochromis, and it has been kept by Malawi enthusiasts for decades.13

Fun facts for the dinner table

  1. 1

    It swallows prey tail-first, which is unusual among fish.3

  2. 2

    Despite the name, eye-biting has not been documented in the wild.3

  3. 3

    In the wild it hunts mostly young utaka and other shoaling fish.1

  4. 4

    Its thin body lets it blend in among aquatic plants while waiting for prey.3

Recognised by the official bits

IUCN Red List
Least Concern (assessed 22 June 2018)1
Taxonomy
Described by Boulenger in 1908 as Paratilapia compressiceps; later in Cyrtocara and Haplochromis3

Owner questions the things everyone asks

How often should I feed my Malawi Eyebiter?

Pet Wiki's starting plan is to feed small amounts once or twice a day. Stick to this routine and adjust based on your fish's appetite and the food label.2 Pet Wiki plan

What does a Malawi Eyebiter eat, and what should it never eat?

This fish is a predator that eats meaty frozen foods like prawn, mussel and cockle, with pellets only as an extra. Never feed it live feeder fish or dry flake foods, as they lack the right nutrition.21

How much space does a Malawi Eyebiter need?

It needs a tank with a base of at least 150 x 38 cm, which is about 257 litres. This gives it room to hover and make swift dashes.21

What temperature, light or water does a Malawi Eyebiter need?

Keep the water at 22 to 28°C, with a pH of about 7.5 to 8.8 and hardness of 9 to 25 dGH. Provide moderate lighting and some cover or tall decor.21

How often should I clean a Malawi Eyebiter's home?

Pet Wiki's plan suggests a weekly water change of about 25%, along with weekly glass cleaning and water testing. Rinse the filter monthly in old tank water, never tap water. Pet Wiki plan

Can a Malawi Eyebiter live with others?

Yes, it is peaceful with fish too big to swallow, so keep it with fish longer than about 12 cm. For breeding, have more females than males in the group.2

How long does a Malawi Eyebiter live?

Lifespan varies depending on care, water quality and diet. For a more accurate estimate, ask a good breeder or an exotic-pet vet.

Can I handle a Malawi Eyebiter?

No, this fish is not for handling. It is a calm predator that prefers to hover among cover, and handling would stress it greatly.32

Written from the sources on this page, a few checked guides (VCA, ASPCA, RSPCA) and Pet Wiki's own starting care plan. A friendly guide, not a vet's advice.

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Where this comes from

Every fact on this page has a numbered source. Spotted an error? support@petwiki.app.

  1. FishBase species summary: Dimidiochromis compressiceps fishbase.seused for distribution, size, water parameters, diet, IUCN status, taxonomy
  2. Seriously Fish: Dimidiochromis compressiceps seriouslyfish.comused for aquarium care, tank size, behaviour, diet, colours, breeding
  3. Wikipedia: Dimidiochromis compressiceps en.wikipedia.orgused for common names, colours, history, fun facts (secondary)

Checked 2026-09-30. Text is written in our own words from these sources.