Exasperatus Cichlid Care Guide - Aquarium Setup, Diet & Breeding

Exasperatus is a striking Lake Malawi mbuna with a compact, deep-bodied shape and the confident, alert character typical of its group. Adults are usually blue to blue-grey, with darker vertical barring and contrasting pale or yellowish markings that can vary between individuals and populations. The fins may show attractive blue, black and pale edging.

Exasperatus, Labidochromis joanjohnsonae, is endemic to Lake Malawi in East Africa. It is particularly associated with rocky shores around Likoma Island and nearby parts of the lake.

A group should have at least a 200-litre aquarium, with a footprint of roughly 120 cm by 40 cm for territorial boundaries and swimming space. Use a fine sand or smooth gravel substrate and build numerous caves, crevices and broken sight lines from limestone or other aquarium-safe rock. Strong filtration, vigorous circulation, open swimming areas and well-oxygenated alkaline water help recreate the species' rocky lake habitat.

Males reach about 10 cm (4 inches) in length, while females are usually slightly smaller at around 8–9 cm (3.1–3.5 inches).

This species is primarily an herbivore that grazes aufwuchs, algae and the small organisms living among the growth on rocks. Offer a good-quality spirulina- or vegetable-based flake or pellet as the staple, supplemented with blanched leafy vegetables and occasional algae-based foods. Keep rich, fatty animal foods to a minimum because an overly meaty diet can contribute to digestive problems.

Suitable companions include other robust Lake Malawi mbuna with similar environmental needs, such as Rusty Cichlids, Yellow Labidochromis and carefully selected Pseudotropheus species. Avoid peaceful community fish, slow-moving species and similarly patterned or closely related mbuna that may provoke excessive aggression or hybridisation. Overstocking is sometimes used by experienced mbuna keepers to spread territorial pressure, but filtration and maintenance must be strong.

Exasperatus Cichlids are maternal mouthbrooders and will usually breed readily in a mature aquarium. Provide several females for each male, along with flat rocks and caves where spawning can take place. After fertilisation, the female carries the eggs and fry in her mouth for around three weeks, during which time she may hide and eat very little. The fry can be raised on finely crushed flake food and newly hatched brine shrimp once released.

Males are generally larger and more intensely coloured, often displaying stronger blue tones and more pronounced fin markings. Females are typically smaller and paler, although colour differences can vary with mood, social status and locality.