Acheilognathus polylepis

Family: Cyprinidae

Acheilognathus polylepis — a Cyprinidae from China & East Asia, mostly peaceful; keep with calm tankmates. Reaches 6.5–9.6 cm; loose shoals; groups of 6+ settle quickly. 15–25 °C.

Care parameters

Water temperature
15–25 °C
pH
6.5–7.5
GH hardness
5–15 dGH
Adult length
6.5–9.6 cm
Minimum tank
111 L
Water layer
Active throughout the water column
Difficulty
Moderate
Temperament
Mostly peaceful; keep with calm tankmates
Origin
China & East Asia

Species overview

A Cyprinidae species native to China & East Asia: Acheilognathus polylepis lives active throughout the water column over gravel. Mostly peaceful; keep with calm tankmates. Adults reach 6.5–9.6 cm. It is one of the aquarium-kept Acheilognathus species we profile, alongside Acheilognathus barbatulus, Acheilognathus cyanostigma, Acheilognathus gracilis.

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
Loose shoals; groups of 6+ settle quickly
Diet
Small omnivore; flakes, granules and vegetable matter
Recommended tankmates
  • Other small peaceful cyprinids — Similar size, similar water
Avoid keeping with
  • Fin-nippers — Their flowing fins invite damage

Breeding & notes

Sexual dimorphism
Males often slimmer and more colourful
Breeding method
Deposits eggs in freshwater mussels; no aftercare

Frequently asked questions

Is Acheilognathus polylepis easy to keep?

Difficulty: moderate. Mostly peaceful; keep with calm tankmates. Loose shoals; groups of 6+ settle quickly.

What temperature and water chemistry does Acheilognathus polylepis need?

Aim for 15–25 °C. Room temperature to heated, depending on origin; 15.0–25.0 °C typical for the genus.

How big does Acheilognathus polylepis get, and what tank size?

Expect 6.5–9.6 cm as an adult, living active throughout the water column. A 111 L tank or larger gives it room.

What does Acheilognathus polylepis eat?

Small omnivore; flakes, granules and vegetable matter. It forages naturally over fine gravel and sand, so let some food reach the bottom.

Can Acheilognathus polylepis live with other fish?

Mostly peaceful; keep with calm tankmates; loose shoals; groups of 6+ settle quickly. Good company: Other small peaceful cyprinids — Similar size, similar water. Keep away from Fin-nippers — Their flowing fins invite damage.

Where does Acheilognathus polylepis come from?

Its home waters are China & East Asia — clear streams and rivers over gravel, with moderate, well-oxygenated current.

Does Acheilognathus polylepis jump?

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

How does Acheilognathus polylepis breed?

In the aquarium: deposits eggs in freshwater mussels; no aftercare. Males often slimmer and more colourful.