Phoenix rasbora

Boraras merah

A dark oval on a pale body

A dark oval marks the front flank, with orange-red concentrated around the markings on a pale golden body.

Adult length: Up to 2 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, with soft, acidic water over leaves and wood.

Do not change water abruptly. Use a mature stable aquarium with gentle flow and cover; avoid larger vigorous feeders.

View comparison →

Appearance and identification

Typical phoenix rasboras have more separated dark markings and more pale body area than chili rasboras. Some males develop stripes, so a broken line alone does not identify it.

Same-species behaviour

Keep at least 8–10; breeding males may hold temporary territories.

Space requirements

A 45 × 30 cm base.

Diet and feeding

Offer tiny prepared foods and small live or frozen foods, checking that shy individuals feed.

Compatibility limits

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

Aquarium environment

Dense planting, floating shade and gentle flow provide shelter.

Sources