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Argulus foliaceus. Argulus foliaceus, also known as the common fish louse, is a species of fish lice in the family Argulidae. [1] It is "the most common and widespread native argulid in the Palaearctic" [2] and "one of the most widespread crustacean ectoparasites of freshwater fish in the world", considering its distribution and range of hosts. [3]
A louse's egg is commonly called a nit. Many lice attach their eggs to their hosts' hair with specialized saliva; the saliva/hair bond is very difficult to sever without specialized products. Lice inhabiting birds, however, may simply leave their eggs in parts of the body inaccessible to preening, such as the interior of feather shafts.
Asellus aquaticus can breed throughout the year, if the temperature is high enough: they do not breed under cold temperatures. Maturity can be reached in few months under warm summer temperatures, but maturation may take as much as two years in permanently cold water bodies (e.g., high-latitude or mountain waters). [3]
In addition to the lice and their bites, you might notice lice eggs called nits, Kassouf says. Nits are tiny, hard and white, and they stick to the hair follicle.
Cymothoa exigua, or the tongue-eating louse, is a parasitic isopod of the family Cymothoidae. It enters a fish through the gills . The female attaches to the tongue, while the male attaches to the gill arches beneath and behind the female.
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, Dipteropeltidae, has been proposed.
The infestations of sea lice in salmon farms increases the number of lice in the rest of the surrounding water dramatically if the eggs from the gravid louse are allowed to disperse. [11] Sea lice can also attach to juvenile salmon migrating from rivers to the ocean if they pass by fish farms. [11]
The white perch, sometimes called sac au lait from Cajun French, was designated the official state fish of Louisiana in 1993. [19] Coastal beaches are inhabited by sea turtles. Freshwater fish include bass, crappie, and bream. Red and white crawfishes are the leading commercial crustaceans.