Southeast Asian Yellowtail Rasbora (Rasbora tornieri)

Family: Cyprinidae

Southeast Asian Yellowtail Rasbora — a Cyprinidae freshwater fish. Reaches 12.8–18.7 cm; keep at 22–26 °C.

Care parameters

Water temperature: 22–26 °C
pH: 6.2–7
GH hardness: 5–15 dGH
Adult length: 12.8–18.7 cm
Minimum tank: 420 L
Water layer: Bottom-dwelling
Difficulty: Moderate
Temperament: Mostly peaceful; some species nip fins

Species overview

Rasbora tornieri is a Cyprinidae. In the aquarium it stays mostly peaceful. Plan on 12.8–18.7 cm of adult fish at 22–26 °C. Related profiles: Rasbora borapetensis, Rasbora caudimaculata, Rasbora einthovenii.

Native biotope

Habitat: Clear streams and rivers over gravel
Flow: Moderate, well-oxygenated current
Dissolved O₂: Appreciates well-oxygenated water

Aquascape & hardware

Substrate: Fine gravel and sand
Hardscape: Water-worn stones and driftwood
Plants: Hardy rooted plants along the margins

Temperament, diet & tankmates

Schooling: Shoaling; keep in groups of 6 or more
Diet: Omnivore; prepared foods with regular vegetable matter
Recommended tankmates: Similar-sized peaceful community fish — Similar size and water needs
Avoid keeping with: Much smaller fish — May outcompete or bully tiny tankmates

Breeding & notes

Sexual dimorphism: Males often slimmer and more colourful
Breeding method: Egg-scatterer; no parental care

Frequently asked questions

Is Southeast Asian Yellowtail Rasbora easy to keep?

Difficulty: moderate. Mostly peaceful; some species nip fins. Shoaling; keep in groups of 6 or more.

What temperature and water chemistry does Southeast Asian Yellowtail Rasbora need?

Aim for 22–26 °C. Room temperature to heated, depending on origin; 22.0–26.0 °C typical for the genus.

How big does Southeast Asian Yellowtail Rasbora get, and what tank size?

Expect 12.8–18.7 cm as an adult, living bottom-dwelling. A 420 L tank or larger gives it room.

What does Southeast Asian Yellowtail Rasbora eat?

Omnivore; prepared foods with regular vegetable matter. Feed two small meals a day rather than one large one.

Can Southeast Asian Yellowtail Rasbora live with other fish?

Mostly peaceful; some species nip fins; shoaling; keep in groups of 6 or more. Good company: Similar-sized peaceful community fish — Similar size and water needs. Keep away from Much smaller fish — May outcompete or bully tiny tankmates.

Where does Southeast Asian Yellowtail Rasbora come from?

Found in clear streams and rivers over gravel; expect moderate, well-oxygenated current and appreciates well-oxygenated water.

Does Southeast Asian Yellowtail Rasbora jump?

Low escape risk, but a lid is cheap insurance.

How does Southeast Asian Yellowtail Rasbora breed?

Egg-scatterer; no parental care. Males often slimmer and more colourful.