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''Argulus'' is a genus of fish lice in the family 
Argulidae
The family Argulidae, whose members are commonly known as carp lice or fish lice, are parasitic crustaceans in the class Ichthyostraca. It is the only family in the monotypic subclass Branchiura and the order Arguloida, although a second family, ...
. There are about 140 accepted species in the genus ''Argulus''. They occur in marine, brackish, and freshwater environments. As juveniles, these species feed on mucous and skin cells of their host. With age they become blood feeders because the parasite moves from feeding on the fins to feeding on the body of the fish, causing the feeding change.
Taxonomy
As of December 2022, 138 species are accepted:References
Further reading
*External links
* Crustacean genera Taxa named by Otto Friedrich Müller Articles created by Qbugbot {{crustacean-stub