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

Dwarf rasbora

Boraras maculatus

Separate dark spots on red-orange

Separate dark markings stand out on a red-orange body: an anterior flank spot plus anal-base and tail-base marks.

Adult length
Up to 2.5 cm (standard length, without the tail fin)
Water temperature
20–28 °C
pH
4–6.5
Hardness
1–5 dGH
Natural habitat
Inhabits blackwater streams and rivers associated with peat swamp forest, shaded by forest canopy and littered with leaves and wood.

Use mature, stable, soft acidic water with gentle flow and shelter. Its small size and timidity limit community choices.

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Appearance and identification

In Boraras naevus, red does not extend onto the head and the anterior spot differs more between sexes.

Same-species behaviour

Keep at least 8–10.

Space requirements

A 45 × 30 cm base.

Diet and feeding

Provide tiny prepared foods and small live or frozen foods; aquarium microfauna alone is insufficient.

Compatibility limits

Small size and peaceful behaviour do not guarantee compatibility; consider predation and feeding competition.

Aquarium environment

Dense planting and floating shade provide shelter. Feeding and water stability remain essential.

Sources

www.seriouslyfish.com ↗ 2026-10-22

PeekFish · Ornamental fish

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