Shell-Dwelling Cichlid

Neolamprologus multifasciatus

Also known as: Multi, Multies, Multifasciatus

Water Parameters

• Temperature: 24–27°C
• pH: 7.8–9
• Hardness (GH): 214–447 ppm (12–25 dGH)

Values above are general hardness (GH). For carbonate hardness (KH), the buffer that keeps pH stable, see the water parameters guide.

Care Summary

A captivating miniature: a colony of the world's smallest cichlid, each fish barely larger than a thumbnail, living among a scattering of snail shells on the sand of a Lake Tanganyika biotope. What makes shell dwellers special is behaviour over colour. They are plain silvery-tan fish, but they dig, excavate, rearrange their shells, defend microscopic territories, and raise successive broods communally, turning a small tank into a busy, watchable society. They need hard, alkaline water (a natural fit for much of Australia's tap), a deep sand bed, and a generous supply of empty shells, and they are happiest as a species-only colony. Hardy and long-lived once their simple but specific needs are met, they are one of the most rewarding nano fish in the hobby for a keeper who wants behaviour and breeding in a small footprint rather than a community of colour. That alkaline water relies on a high carbonate hardness (KH), ideally 8 dKH or more (about 140 ppm and up), to hold the pH near 8.5 to 9 without swings.

Tankmates

A colony animal from Lake Tanganyika and the smallest cichlid in the world, the shell dweller lives its entire life in and around a bed of empty snail shells on the sand, into which each fish retreats and which it defends fiercely against its neighbours despite its tiny size. It is best kept as a species-only colony: start with a group of four to six over a deep sand bed scattered with plenty of escargot or similar shells, and let them pair off, dig, and breed, building a complex little society. They need hard, alkaline Tanganyikan water, which suits hard Australian tap supplies. Tankmates are difficult because most fish are either too big (and eat them) or want soft water, so apart from a few open-water Tanganyikans or a synodontis in a larger tank, a dedicated colony is the way to keep them. Will eat dwarf shrimp.

Compatible with

• Synodontis Catfish
• Bristlenose Pleco

Avoid keeping with

• Betta
• Neon Tetra
• Cherry Shrimp
• Soft Water Species
• Large Cichlids
• Angelfish

Common Problems

• aggression over shells when too few shells are provided
• incompatibility with soft-water or large tankmates
• needing a deep sand bed and many empty shells
• predation on dwarf shrimp

Sources: seriouslyfish.com, fishbase.org · Last updated: 2026-06-20