Species description

Care, breeding and tankmates

Fish profile

Temperament

Peaceful

They are playful, highly social, and entirely peaceful towards other fish species. Their constant, comical interactions with one another are a joy to observe. They will click audibly when happy or fighting over a favored piece of food.

Diet

Omnivore

They are omnivorous and require a varied diet to thrive and maintain their colors. Feed them high-quality sinking pellets, algae wafers, and fresh blanched zucchini. They also highly appreciate frozen bloodworms, brine shrimp, and live blackworms.

Sex ratio

School

They must be kept in large groups of at least five or six to thrive socially. Sexing them visually is nearly impossible, so buying a group ensures a proper mix. They establish a complex hierarchy governed by an alpha loach, which is often female.

Feeding frequency

Twice daily

Feed them small portions two to three times a day. Since they are primarily nocturnal, dropping food in just before lights out is highly recommended. Ensure the food reaches the bottom before faster top-dwelling fish consume it all.

Bioload

High

Clown Loaches grow quite large and contribute a significant bioload to the aquarium. Exceptional biological and mechanical filtration is absolutely mandatory. Substantial, weekly water changes are critical to maintain the pristine water conditions they require.

Flow

Strong

Originating from fast-flowing rivers in Indonesia, they love highly oxygenated, fast-moving water. Installing powerheads to create a strong current across the bottom will keep them active and healthy. Good surface agitation is essential to ensure maximum oxygen exchange.

Jump risk

Yes

While mostly benthic, they can jump if frightened or if water conditions deteriorate rapidly. A tight-fitting lid is essential, especially given their surprisingly fast swimming bursts. Ensure all filter cutouts are covered to prevent escape.

Reproduction

Oviparous

Breeding the Clown Loach in a home aquarium is extraordinarily rare and difficult. They require massive tanks and specific hormonal triggers to spawn successfully. The majority of specimens in the hobby are either wild-caught or commercially bred with hormones.

Compatibility & tankmates

With caution

They are incredibly peaceful bottom-dwellers suitable for large community aquariums. They ignore most other fish but will enthusiastically eat any small snails in the tank. Excellent tank mates include large tetras, peaceful cichlids, and rainbowfish.

Tank level

Bottom

They are active bottom-dwellers that relentlessly comb the substrate for food. They require extremely large PVC pipes, driftwood, or smooth rock caves to sleep in. It is completely normal to find them resting on their sides, mimicking a dead fish.