Chinese Grass Carp (Ctenopharyngodon idella)

Family: Cyprinidae

Chinese Grass Carp — a Cyprinidae from China, peaceful; keep with similar-sized calm tankmates. Reaches 112.5–165 cm; keep in a group of 4–6 for natural behaviour. 18–28 °C.

Care parameters

Water temperature
18–28 °C
pH
6.5–7.5
GH hardness
5–15 dGH
Adult length
112.5–165 cm
Minimum tank
500 L
Water layer
Active throughout the water column
Difficulty
Moderate
Temperament
Peaceful; keep with similar-sized calm tankmates
Origin
China

Species overview

Ctenopharyngodon idella is a Cyprinidae from China. In the wild it prefers clear streams and rivers over gravel; in the aquarium it stays peaceful. Plan on 112.5–165 cm of adult fish at 18–28 °C. In a community tank it pairs well with Robust schooling cyprinids.

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
Keep in a group of 4–6 for natural behaviour
Diet
Omnivore; prepared foods with regular variety
Recommended tankmates
  • Robust schooling cyprinids — Add activity without conflict
Avoid keeping with
  • Much larger predators — Risk at night

Breeding & notes

Sexual dimorphism
Males often slimmer and more colourful
Breeding method
Breeding is straightforward scatter-spawning

Frequently asked questions

Is Chinese Grass Carp easy to keep?

A moderate-level species: peaceful; keep with similar-sized calm tankmates; stable water matters more than fancy equipment.

What temperature and water chemistry does Chinese Grass Carp need?

Hold 18–28 °C and keep it stable — 18–28 °C manually curated 2026-09-20 (was GBIF-derived). Room temperature to heated, depending on origin.

How big does Chinese Grass Carp get, and what tank size?

Expect 112.5–165 cm as an adult, living active throughout the water column. A 500 L tank or larger gives it room.

What does Chinese Grass Carp eat?

Omnivore; prepared foods with regular variety. Vary the menu — quality flakes or pellets plus frozen or live foods.

Can Chinese Grass Carp live with other fish?

Peaceful; keep with similar-sized calm tankmates. Recommended tankmates: Robust schooling cyprinids — Add activity without conflict. Avoid Much larger predators — Risk at night.

Where does Chinese Grass Carp come from?

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

Does Chinese Grass Carp jump?

Low escape risk, but a lid is cheap insurance.

How does Chinese Grass Carp breed?

Breeding is straightforward scatter-spawning. Males often slimmer and more colourful.