Brevis Shelldweller Care Guide - Aquarium Setup, Diet & Breeding

The Brevis Shelldweller is a small, compact Tanganyikan cichlid with a pale beige, grey or brownish body marked by subtle vertical shading and iridescent blue highlights around the face and fins. Its relatively large eyes and blunt profile give it a distinctive, expressive appearance, while the fins may show delicate blue or yellow edging.

Unlike many larger African cichlids, this species is closely associated with empty snail shells. A shell can serve as a home, lookout point, breeding site and escape route, and a fish may retreat inside rapidly when startled. Brevis Shelldwellers often hover just above the sand near their chosen shells before darting back into cover.

They are territorial around their individual shells but are not generally open-water swimmers or persistent bullies. Pairs may defend a small area together, with the female usually spending more time close to the shell and the male patrolling the surrounding space.

In Lake Tanganyika, Brevis Shelldwellers live over bright sandy bottoms scattered with empty snail shells. Their specialised shell-dwelling lifestyle is an excellent example of the unusual behaviours that have evolved among the lake’s diverse cichlid community.

Brevis Shelldwellers are endemic to Lake Tanganyika in East Africa, where they inhabit shallow sandy areas along the lake’s shoreline. They use empty Neothauma snail shells as shelters, spawning sites and defensive refuges.

A pair can be kept in an aquarium of at least 60 litres, with a footprint around 60 × 30 cm; a larger aquarium is needed for multiple pairs or a community of Tanganyikan cichlids. Use a fine, smooth sand substrate and provide several empty Neothauma snail shells or similar shells, arranged with space between territories. Open sandy areas are more important than dense planting, while a few limestone rocks can help create boundaries and maintain the hard, alkaline character of their natural habitat. Maintain a temperature of 24–28°C and a pH of approximately 8.0–9.2.

Males reach about 5 cm (2 inches), while females are usually smaller at approximately 3.5–4 cm (1.4–1.6 inches).

Brevis Shelldwellers are small carnivorous predators that naturally consume tiny crustaceans, insect larvae and other invertebrates found around the lakebed. Offer a varied diet of high-quality small cichlid pellets or granules supplemented with frozen or live foods such as brine shrimp, daphnia, cyclops and finely chopped bloodworm. Small portions fed regularly are preferable to large meals, and uneaten food should not be allowed to accumulate in the sand.

Suitable tankmates include peaceful, similarly sized Tanganyikan fish that occupy different areas of the aquarium, such as small Julidochromis species, peaceful Cyprichromis in a suitably spacious setup, and some gentle Tanganyikan goby cichlids. They should not be housed with large or highly aggressive African cichlids, mbuna, boisterous Central American cichlids or fin-nipping community fish. Keeping several shell-dwelling species together can also lead to severe territorial competition, particularly in a small aquarium.

Brevis Shelldwellers are shell-spawning cichlids that usually breed as a bonded pair. Provide several suitable empty snail shells, and the female will select one and lay her eggs inside it, often remaining within the shell while the male fertilises them from outside. Around 15–30 eggs may be laid, with hatching generally occurring after a few days. The female guards the shell and tends the brood, while the free-swimming fry can be fed newly hatched brine shrimp and other tiny foods.

Males are generally larger and may develop a more elongated body and more pointed fin tips. Females remain smaller and rounder, especially when carrying eggs, although colour differences are usually subtle.