Aquarium species profile

Peacock Gudgeon

Tateurndina ocellicauda · Oceania (Papua New Guinea — Eastern lowland rivers)

Minimum tank15 gal

Adult size3"

Care levelEasy

TemperamentPeaceful

Temperature72–82°F

pH range6.5–7.5

Diet

Carnivore – micro pellets, frozen baby brine shrimp, daphnia, bloodworms

Compatible tank mates

Small tetras, rasboras, small Corydoras, peaceful nano fish, Apistogramma

Tank mates to avoid

Aggressive fish, large predatory fish

Care notes

One of the most beautiful nano fish available. Males display vivid blue, yellow, and pink coloration with an eyespot on the tail. Cave spawner — provide small caves or PVC pipes. Males guard eggs. Peaceful and easy to breed. Sometimes mistaken for a South American fish but native to PNG.

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.

Check compatibility in Fishician