Chilumba Cichlid Care Guide - Habitat, Diet & Breeding

Chilumba is an undescribed Tropheops mbuna from Lake Malawi, valued for the contrast between the male's cool blue tones and the warmer yellow markings often seen on the dorsal fin. Females and younger fish are usually yellow, gold, brownish or subdued blue-grey, commonly with darker vertical bars that become less obvious as the fish matures.

These are sturdy, active cichlids with the deep-bodied shape and blunt, algae-scraping mouth typical of Tropheops. Males defend feeding and breeding territories among the rocks, and their displays can include fin spreading, colour intensification and short bursts of chasing.

In the wild, Chilumba cichlids live along rocky margins where sunlight supports a coating of algae and the surrounding crevices offer refuge. They spend much of the day picking at aufwuchs, taking in algae together with the tiny invertebrates and microorganisms living within it.

Like many mbuna, they are intelligent, vigorous fish with clear individual personalities. Their territorial behaviour is part of their natural social system, so a group with a suitable sex ratio and plenty of visual barriers is more stable than a pair kept in an open aquarium.

Tropheops sp. 'chilumba' comes from the rocky shoreline around Chilumba in Lake Malawi, in Malawi, southeastern Africa. It is one of the rock-dwelling mbuna associated with the lake's shallow coastal habitats.

A group should have at least 200 litres, with a footprint of approximately 120 × 45 cm or larger; additional floor space is especially valuable when keeping more than one male. Build numerous caves, crevices and visual barriers from securely placed limestone or other aquarium-safe rock, leaving open areas for swimming. Use fine sand or another smooth substrate that allows natural sifting and does not damage the mouth. Strong filtration, good oxygenation and regular maintenance are important for this active, waste-producing cichlid.

Males reach about 12 cm (4.7 inches) in adult length, while females are generally smaller at around 9–10 cm (3.5–3.9 inches).

Feed Chilumba cichlids a predominantly vegetable-based diet built around quality spirulina or algae-based flakes and pellets. Supplement this with blanched spinach, courgette or other suitable vegetables, while occasional small portions of foods such as daphnia can add variety. Avoid making rich, meaty foods a regular part of the diet, as mbuna are adapted to grazing aufwuchs and excessive animal protein can contribute to digestive problems.

Suitable companions include other robust Lake Malawi mbuna of similar size and temperament, such as rusty cichlids, saulosi, acei and carefully selected zebra or elongate mbuna varieties. Avoid peaceful community fish, slow-moving species and delicate long-finned fish, which may be harassed. Do not combine them with very similar-looking Tropheops or other closely related fish if avoiding hybridisation is important, and avoid overcrowding with multiple highly aggressive males.

Chilumba cichlids are maternal mouthbrooders and can breed readily in a mature mbuna aquarium. Use one male with several females to spread his attention. After courtship and spawning, the female collects the eggs in her mouth and fertilises them by following the male's egg spots. She incubates the brood for around three weeks, often eating little during this time, and releases free-swimming fry among the rocks. Dense rockwork provides useful shelter for the young, although dedicated fry rearing gives the highest survival rate.

Mature males are typically larger and more intensely coloured, often showing a blue or blue-grey body with a yellow to orange dorsal-fin area and clearer egg spots on the anal fin. Females are smaller and commonly yellow, gold, brownish or more strongly barred, although colour varies between individuals and collection forms.