Chinese Grass Carp (Ctenopharyngodon idella)

Family: Cyprinidae

Chinese Grass Carp — a Cyprinidae from 中国, 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
中国

Species overview

Ctenopharyngodon idella is a Cyprinidae from 中国. Its calm temperament and broad diet make it one of the more forgiving residents of a community tank. It uses the whole water column. Adults reach 112.5–165 cm. Keep in a group of 4–6 for natural behaviour. Stable water, regular partial changes and a varied diet cover nearly everything it needs. Maintain 18–28 °C at pH 6.5–7.5. Water quality and diet matter more than décor.

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