Daisy’s ricefish

Oryzias woworae

Steel-blue sides, an orange-red belly edge and red tail margins.

Adult males show blue iridescence, an orange-red throat and anterior belly, and red upper and lower tail edges. Females are paler.

Adult length: Up to 3 cm (standard length, without the tail fin)
Water temperature: 23–27 °C
pH: 6–7.5
Hardness: 5–15 dGH

Natural habitat: Originally collected at Fotuno spring near Wakumoro village on Muna Island, Indonesia.

Do not use cool medaka conditions. Small size makes it vulnerable to larger fish; XXL and Black are forms of the same species.

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Appearance and identification

A tropical freshwater species from Muna Island, Indonesia. Wolasi ricefish also have blue iridescence and red tail margins; check the orange-red anterior belly and sex. "Blue ricefish" is not a reliable species label.

Same-species behaviour

Keep eight or more. Courting males spar; provide visual shelter.

Space requirements

A 45 × 30 cm base. Combine fine plants and surface cover with open water, adjusted for adults and courtship behaviour.

Diet and feeding

Offer fine dry food plus microworms or Artemia nauplii.

Compatibility limits

Avoid large or assertive tankmates. Keep breeding stocks separate.

Aquarium environment

Plants support egg attachment and fry shelter, but adults can eat fry.

Sources