Fish

Koi Fish

Cyprinus carpio

Living

Living individuals or members of this group exist today. This does not mean they are safe from extinction.

Koi are ornamental domesticated carp bred for contrasting colours and patterns. Their pond setting and breeding history distinguish this account from a description of wild carp populations.

Ornamental koi in a pond at Loro Parque.

Ornamental koi in a pond at Loro Parque.

Eistreter · CC BY-SA

At a glance

Location
Koi are kept in managed freshwater ponds in many countries. Their ornamental breeding developed in Japan. The catalog retains Cyprinus carpio, although USGS discusses modern placement under Cyprinus rubrofuscus and the complexity of koi ancestry.
Habitat
Rivers and lakes, Towns and cities
Diet
Omnivore
Food
Koi eat animal and plant material.

Classification

Common name
Koi Fish
Browse group
Fish
Scientific name or taxon
Cyprinus carpio
Taxon rank
species
Order
Cypriniformes
Family
Cyprinidae
Genus
Cyprinus
Source classification
Actinopterygii

Taxonomy checked against GBIF. For breeds and hybrids, this describes the listed parent taxon.

Three things to know

  • They are selectively bred ornamental carp.
  • Patterns vary greatly among varieties.
  • Their eggs can attach to submerged plants.

Habitat and range

Koi are kept in managed freshwater ponds in many countries. Their ornamental breeding developed in Japan. The catalog retains Cyprinus carpio, although USGS discusses modern placement under Cyprinus rubrofuscus and the complexity of koi ancestry.

Appearance and adaptations

Deep bodies and barbels around the mouth accompany patterns that can combine white, orange, red, black and other colours. Selective breeding has produced many forms; koi are not simply oversized goldfish.

Diet and behaviour

Koi eat animal and plant material. Aquatic insects, algae and plants supplement foods supplied in managed ponds. Eggs adhere to submerged vegetation or other objects rather than receiving parental care.

Sources

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