All fish / Cyprinidae

Rosefin rasbora

Rasbora dusonensis

Also known as rosefin rasbora, yellowfin rasbora, duson rasbora, red fin rasbora, dusonensis rasbora, rasbora dusonensis, ปลาซิวหางแดง, seluang, ラスボラ・ドゥソネンシス, wader, 红鳍波鱼

A slim, silvery rasbora with a dark stripe along the rear half of the body and reddish to yellow fins, with dark edges on the tail lobes. It is a lively, hardy shoaling fish that suits larger planted community tanks with plenty of open swimming space.

Care at a glance

Care level

Easy

Temperament

Peaceful

Adult size

10 cm

Temperature

22 to 27 °C

pH

6 to 7.5

Smallest tank

150 litres

Keep as

Shoal of 8 or more

Diet

Omnivore: quality flakes and small pellets, plus frozen or live bloodworm, daphnia and brine shrimp

Swims

Middle of the tank

Lifespan

5 to 8 years

Water

Freshwater

Wild range

Southeast Asia: Malay Peninsula, Sumatra, Borneo, Thailand and Cambodia (Mekong and Chao Phraya basins)

Breeding

An egg scatterer that spawns among plants and gives no parental care, readily eating its own eggs. Spawning is possible in a separate tank with fine-leaved plants or mesh, removing the adults afterwards, but it is rarely done deliberately.

Good to know

Grows larger than many expect, around 10 to 12 cm, so it needs a long tank and a tight lid as it can jump. Often confused with Rasbora borapetensis and other similar red-tailed rasboras.