Clown Loach: A Long-Term Commitment in a Cheerful Costume

In this guide

Overview

The clown loach is one of the most recognisable and best-loved bottom-dwelling fish in the hobby, with a bold orange body crossed by three black bands. It comes from Indonesia and is frequently sold small and inexpensive, which badly undersells what it actually becomes: a genuinely large, long-lived fish that can reach thirty centimetres and live twenty years or more.

It is also a deeply social species, doing poorly both physically and behaviourally when kept alone or in a very small group, which is exactly how it is most often sold and kept in the early stages of ownership.

Tank and water requirements

A proper group of at least five or six clown loaches, ideally more, needs a genuinely large tank once grown, with most experienced keepers recommending four hundred to five hundred litres or more for a full-grown adult group, along with soft substrate and plenty of hiding spots such as caves or driftwood. Groups smaller than five tend to show stress-related behaviour and a clear social hierarchy that can turn to bullying of the weakest fish.

Given its eventual size, this is a fish that needs planning for years in advance rather than being bought on impulse as a small, inexpensive juvenile.

Diet and behaviour

An omnivorous diet of sinking pellets, algae wafers and occasional live or frozen food, including snails which clown loaches are famous for eating, suits it well. It is peaceful towards other fish and highly social within its own group, often resting in odd, sideways positions that can alarm a new keeper unfamiliar with the behaviour, though this is entirely normal.

It is prone to whitespot disease more than many other fish and is notably sensitive to certain medications, particularly those containing copper, so treating any tank containing clown loaches needs extra care and research before use.

Buying tips

• Priced around eighty to two hundred rupees per fish for young stock, cheap given the very long-term commitment involved
• Buy at least five or six from the outset rather than starting with one or two and adding more later
• Research medication compatibility carefully before treating any illness, given this species' sensitivity to copper-based treatments

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