Thin Sharpbelly (Toxabramis swinhonis)

Family: Cyprinidae

Thin Sharpbelly — a Cyprinidae from China, calm, undemanding and well-suited to community life. Reaches 11.2–16.5 cm; small groups recommended. 18–26 °C.

Care parameters

Water temperature
18–26 °C
pH
6.5–7.5
GH hardness
5–15 dGH
Adult length
11.2–16.5 cm
Minimum tank
327 L
Water layer
Active throughout the water column
Difficulty
Moderate
Temperament
Calm, undemanding and well-suited to community life
Origin
China

Species overview

Toxabramis swinhonis, a member of the family Cyprinidae, comes from China, where it inhabits clear streams and rivers over gravel. Calm, undemanding and well-suited to community life and unfussy omnivore; varied diet keeps condition, it grows to 11.2–16.5 cm and adapts well to a properly set-up aquarium in the 18–26 °C range. In a community tank it pairs well with Similar-sized peaceful community fish.

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
Small groups recommended
Diet
Unfussy omnivore; varied diet keeps condition
Recommended tankmates
  • Similar-sized peaceful community fish — Compatible size and temperament
Avoid keeping with
  • Fin-nippers — Constant stress

Breeding & notes

Sexual dimorphism
Males often slimmer and more colourful
Breeding method
Spawns freely; remove parents to save the eggs

Frequently asked questions

Is Thin Sharpbelly easy to keep?

A moderate-level species: calm, undemanding and well-suited to community life; stable water matters more than fancy equipment.

What temperature and water chemistry does Thin Sharpbelly need?

Set the heater to 18–26 °C and avoid swings. pH 6.5–7.5, GH 5–15 dGH suit it.

How big does Thin Sharpbelly get, and what tank size?

Expect 11.2–16.5 cm as an adult, living active throughout the water column. A 327 L tank or larger gives it room.

What does Thin Sharpbelly eat?

Unfussy omnivore; varied diet keeps condition. It forages naturally over fine gravel and sand, so let some food reach the bottom.

Can Thin Sharpbelly live with other fish?

Yes, with care. Calm, undemanding and well-suited to community life — pair it with Similar-sized peaceful community fish — Compatible size and temperament and skip Fin-nippers — Constant stress.

Where does Thin Sharpbelly come from?

Native to China, where it lives in clear streams and rivers over gravel. Moderate, well-oxygenated current; Appreciates well-oxygenated water.

Does Thin Sharpbelly jump?

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

How does Thin Sharpbelly breed?

Spawns freely; remove parents to save the eggs. Males often slimmer and more colourful.