Somphongs's Rasbora (Trigonostigma somphongsi)

Family: Cyprinidae

Somphongs's Rasbora — a Cyprinidae freshwater fish. Reaches 7.9–11.6 cm; keep at 22–26 °C.

Care parameters

Water temperature
22–26 °C
pH
6–6.5
GH hardness
5–12 dGH
Adult length
7.9–11.6 cm
Minimum tank
161 L
Water layer
Bottom-dwelling
Difficulty
Moderate
Temperament
Mostly peaceful; some species nip fins

Species overview

A Cyprinidae species: Trigonostigma somphongsi lives bottom-dwelling over gravel. Mostly peaceful; some species nip fins. Adults reach 7.9–11.6 cm. It is one of the aquarium-kept Trigonostigma species we profile, alongside Trigonostigma espei, Trigonostigma heteromorpha, Trigonostigma hengeli.

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 Somphongs's 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 Somphongs's Rasbora need?

Set the heater to 22–26 °C and avoid swings. pH 6–6.5, GH 5–12 dGH suit it.

How big does Somphongs's Rasbora get, and what tank size?

Adults reach 7.9–11.6 cm; it is bottom-dwelling. Plan for at least 161 litres.

What does Somphongs's Rasbora eat?

Omnivore; prepared foods with regular vegetable matter. It forages naturally over fine gravel and sand, so let some food reach the bottom.

Can Somphongs's Rasbora live with other fish?

Mostly peaceful; some species nip fins. Recommended tankmates: Similar-sized peaceful community fish — Similar size and water needs. Avoid Much smaller fish — May outcompete or bully tiny tankmates.

Where does Somphongs's Rasbora come from?

Its habitat is clear streams and rivers over gravel — moderate, well-oxygenated current, appreciates well-oxygenated water.

Does Somphongs's Rasbora jump?

Not a noted jumper — a standard cover still keeps dust and spray in.

How does Somphongs's Rasbora breed?

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