Ide (fish)

Ide or Golden Orfe
Conservation status
Least Concern (IUCN 2.3)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cypriniformes
Family:	Cyprinidae
Genus:	Leuciscus
Species:	L. idus
Binomial name
Leuciscus idus (Linnaeus, 1758)

The ide (also id) or orfe, Leuciscus idus, is a freshwater fish of the family Cyprinidae found across northern Europe and Asia. It occurs in larger rivers, ponds, and lakes, typically in schools. The name is from Swedish id, originally referring to its bright color (compare the German dialect word aitel 'a kind of bright fish' and Old High German eit 'funeral pyre, fire').^[1]

The body has a typical cyprinid shape and generally silvery appearance, while the fins are a pinkish red in varying degrees. The tail and backfin can be greyish. In older and bigger fish the body color can turn to yellow/bronze.

Ides are predators, eating insects, crustaceans, molluscs, and small fish. In the spring, they move into rivers to spawn over gravel or vegetation; the eggs may be found sticking to stones or weeds in shallow water.

Spread

Orfe eggs, derived from ornamental pond stocks, were illegally imported to New Zealand by mail sometime in the 1980s. Subsequent releases occurred between 1985–86 in at least 8 and possibly 5 more sites north of Auckland. The current status of these populations is in doubt, and at least one release site remains unknown. It seems likely orfe persist in the wild in New Zealand. Whether they become a nuisance species in New Zealand or will be successfully eradicated remains to be seen.^[2]

In April 2010 these fish have been caught in the mid section of the Waikato River NZ, which suggests they are now well established.^{[citation needed]}

References

1. ^ Webster's Third New International Dictionary of the English Language, Unabridged (Merriam, 1961; repr. Merriam-Webster, 1981), p. 723 s.v. "edify."
2. ^ http://www.doc.govt.nz/upload/documents/science-and-technical/PF12rowe.pdf

Sources

• World Conservation Monitoring Centre (1996). Leuciscus idus. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 12 May 2006.
• "Leuciscus idus". Integrated Taxonomic Information System. http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=163576. Retrieved 11 March 2006. 
• Froese, Rainer, and Daniel Pauly, eds. (2005). "Leuciscus idus" in FishBase. 10 2005 version.

External links

• Introductions of ide in the US
• NIWA June 2006
• "Coarse fish teara.govt"