Walteri Hap Care Guide - Tank Setup, Diet & Breeding

Walteri Hap, Copadichromis virginalis, is a graceful Lake Malawi cichlid belonging to the group commonly known as utaka or haps. It has a streamlined, laterally compressed body suited to cruising through open water rather than clinging closely to rocks. Adult males develop attractive blue colouring, often with darker markings and contrasting accents that vary between geographic forms, while females remain more subdued silver, grey or brownish in appearance.

This species is an active midwater swimmer with a generally peaceful temperament for a Malawi cichlid. Males may defend small display or spawning areas, particularly when in breeding condition, but the species is not normally as combative as many mbuna. Its social behaviour is best observed in a group, where females move together and males periodically display to potential mates.

In Lake Malawi, Walteri Haps feed in open water, taking small planktonic organisms from the water column. Their body shape, forward-facing mouth and swimming style reflect this pelagic lifestyle. They are often found around rocky shorelines and sediment-covered areas where currents and wave action concentrate food.

The name “hap” is an aquarium trade term used for many non-mbuna Lake Malawi cichlids and does not represent a formal scientific group. Copadichromis virginalis is one of the lake’s distinctive plankton-feeding cichlids, valued by aquarists for its elegant form, open-water behaviour and the colour developed by mature males.

Walteri Hap is native to Lake Malawi in East Africa, where it occurs in the open waters and rocky coastal areas of the lake. Copadichromis virginalis is associated with the Lake Malawi endemic cichlid fauna.

A group should be given at least a 300-litre aquarium, with a footprint of roughly 120 by 45 cm; a larger tank is preferable for a full adult group or a mixed Malawi community. Use open swimming space through the middle and upper levels, with robust rockwork arranged into caves and sight breaks around the edges. A fine sand substrate reflects their natural habitat and allows natural foraging, while efficient filtration, strong oxygenation and stable alkaline water are important. Secure rocks directly on the tank base before adding sand, as large cichlids can rearrange loose decor.

Males can reach about 15 cm (6 inches) in length; females are usually smaller, reaching approximately 11–12 cm (4.3–4.7 inches).

Walteri Haps are primarily planktivores. Offer a varied diet based on high-quality spirulina or algae-based flakes and small cichlid pellets, supplemented with frozen or prepared foods such as mysis shrimp, cyclops, daphnia and brine shrimp. Feed modest portions several times a day where practical, and avoid making meaty foods such as mammal or bird heart a regular part of the diet because they are unsuitable for Malawi cichlids.

Suitable companions include other peaceful Lake Malawi haps and compatible peacocks of a similar size and temperament, provided the aquarium is spacious and carefully planned. Peaceful Synodontis catfish can also work well. Avoid highly aggressive mbuna, very boisterous predators, fin-nipping fish and other Copadichromis or similarly coloured species that may cause persistent rivalry or hybridisation. Do not keep them with soft-water community fish, which require different water chemistry and may be stressed by their activity and size.

Walteri Haps are maternal mouthbrooders. Provide a sandy area or another suitable spawning site, along with several females for one male. The male displays over a chosen site and the female collects the fertilised eggs into her mouth. She carries them for around three weeks, usually eating little or not at all, before releasing free-swimming fry. Newly released fry can be fed finely crushed flake food, baby brine shrimp or another suitably small fry food.

Mature males are larger and develop much stronger blue colouration, especially across the head and body, sometimes with darker bars or contrasting fin markings. Females are smaller and generally silver, grey or brown, with less intense colour and a rounder body when carrying eggs.