How many shells do I need for a Multies colony?

It is highly recommended to provide at least 3 to 4 empty shells per fish. This prevents severe territorial disputes and gives subdominant individuals places to hide.

Can I keep Multies in a community tank?

They are best kept in a species-only tank due to their small size and specific environmental needs. If kept in a community, tankmates must be peaceful, inhabit the upper water column (like Cyprichromis), and tolerate hard, alkaline water.

Why are my Multies moving all the sand?

This is completely natural behaviour. They continuously excavate sand around their shells to create defensive pits and bury the shells, leaving only the narrow opening exposed to deter predators.

Do I need to separate the fry from the adults?

No, Multies are fantastic parents and will protect their young. In fact, older generations of fry will often help the parents guard the newest batch of babies within the colony.

What type of sand is best for Multies?

Very fine, smooth sand is essential. Aragonite or crushed coral sand is ideal because it not only protects their delicate gills while digging but also helps buffer the water to the high pH they require.

A small striped cichlid hovering defensively above an empty snail shell in fine sand. — AI-generated illustration for OneShoal

FreshwaterTropicalBeginner

Multies

Neolamprologus multifasciatus

A diminutive, charismatic cichlid from Lake Tanganyika that lives, breeds, and builds elaborate communities within empty snail shells.

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Ideal Conditions

Temperature: 24 – 28 °C
pH range: 7.8 – 9
Hardness: 10 – 25 dGH
Adult size: 2.5 – 4.5 cm
Species colony: 40 litres+
Lifespan: 5 – 8 years
Diet: Carnivore/Omnivore
Water flow: Moderate
Preferred setup: Fine sandy substrate with an abundance of empty escargot or Neothauma shells.

About the Multies

The Multies shell dweller holds the title of one of the world's smallest cichlids. Endemic to Lake Tanganyika, they form intricate, multi-generational colonies centred entirely around empty snail shells. Their complex social behaviours and constant sand-moving antics make them incredibly rewarding to observe, offering a bustling slice of lake biotope in a relatively small aquarium.

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Where Multies comes from

Native range

Lake Tanganyika, East Africa

Countries / regions

Zambia, Tanzania, Democratic Republic of the Congo, Burundi

Habitat

Deep sandy expanses covered in vast accumulations of empty Neothauma tanganyicense snail shells.

Endemic to Lake Tanganyika, primarily observed in the deeper sandy regions.

Similar species

Ocellatus Shell Dweller
Lamprologus ocellatus
Fairy Cichlid
Neolamprologus brichardi

We’re adding more full species guides as the catalogue grows.

Compatible tank mates

Reviewed guidance based on this species' recorded traits.

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Cyprichromis leptosoma
Cyprichromis leptosoma
Occupies the upper water column and ignores the shell beds, avoiding territorial disputes.
Great
Julidochromis transcriptus
Julidochromis transcriptus
A small rock-dweller that will stay away from the shell beds if a distinct rocky zone is provided.
Great
Altolamprologus calvus
Altolamprologus calvus
Peaceful towards adult Multies but presents a significant predation risk to stray fry.
Compatible with caution
Bristlenose Pleco
Ancistrus sp.
Large, clumsy bottom-dwellers will bulldoze the carefully arranged shell beds and distress the colony.
Not recommended
Mbuna Cichlids
Maylandia zebra
Far too aggressive, boisterous, and large; they will outcompete the delicate Multies.
Not recommended

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