Fishician®
Aquarium species profile

Rosy Bitterling

Rhodeus ocellatus · East Asia (China, Japan, Korea; introduced widely)

Minimum tank20 gal
Adult size3"
Care levelIntermediate
TemperamentPeaceful
Temperature60–75°F
pH range6.5–8.0

Diet

Omnivore – flake food, micro pellets, algae, daphnia

Compatible tank mates

Other cool-water peaceful fish, minnows, loaches

Tank mates to avoid

Tropical fish, aggressive species

Care notes

Males develop striking pink-red breeding coloration with iridescent lateral stripe. Fascinating breeding biology — deposits eggs inside freshwater mussels using an ovipositor. Cool-water temperate fish.

Check the whole aquarium. Tank size alone does not establish compatibility. Confirm adult size, water overlap, social grouping, territory, diet, and the individual animals before stocking.

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