Cottus perifretum is a species of fish in the family Cottidae. It is found on both sides of the English Channel. It also inhabits Atlantic drainages from the Garonne River (tributaries draining from Massif Central) to the Scheldt in France and Belgium, and the Moselle and Sieg in Germany. It is considered invasive in the Rhine drainage in Germany and the Netherlands. This invasive population in the Rhine is an intermediate between this species and Cottus rhenanus.

Cottus perifretum
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Scorpaeniformes
Family:	Cottidae
Genus:	Cottus
Species:	C. perifretum
Binomial name
Cottus perifretum Freyhof, Kottelat and Nolte, 2005

It reaches a maximum length of 13.4 cm.[2] It prefers small streams to medium-sized rivers.

References

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