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Clown rasbora — left-facing AI-generated natural-coloured adult male, not a photograph

Clown rasbora

Rasbora kalochroma

Two flank blotches on reddish brown

Two irregular dark blotches mark a pink to reddish-brown body; adults are larger than miniature rasboras.

Adult length
Up to 10 cm (standard length, without the tail fin)
Water temperature
23–28 °C
pH
5–7.5
Hardness
2–10 dGH
Natural habitat
Inhabits blackwater streams and rivers associated with peat swamp forest, shaded by canopy and littered with leaves and wood.

Plan for adults: 120 × 45 cm base, mature stable water, swimming space and a secure lid.

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Appearance and identification

Compare with scissortail rasboras: clown rasboras show reddish body colour and flank blotches, while scissortails have silver bodies and black-white tail markings.

Same-species behaviour

Keep at least 8–10.

Space requirements

Allow a 120 × 45 cm base.

Diet and feeding

Offer suitable prepared and live or frozen foods; watch weaker group members during feeding.

Compatibility limits

A peaceful description does not guarantee compatibility; check predation, feeding competition, space and water separately.

Aquarium environment

Marginal plants and floating shade should leave a long swimming lane.

Sources

www.seriouslyfish.com ↗ 2026-10-22

www.seriouslyfish.com ↗ 2026-10-22

PeekFish · Ornamental fish

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