[[File:Argulus.jpg|250px|thumb|right|'''Fish Louse (''Argulus sp.'') attached to the skin of a fish (Wikimedia Commons)''']]
[[File:Argulus.jpg|250px|thumb|right|'''Fish Louse (''Argulus sp.'') attached to the skin of a fish (Wikimedia Commons)''']]
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The '''fish louse''' is a '''metazoan [[Crustacea|crustacean]] skin parasites''' of '''freshwater fish'''. They pose a major threat to teh health of commercially produced fish.
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The '''fish louse (''Argulus spp.''''' is a '''metazoan [[Crustacea|crustacean]] skin parasites''' of '''freshwater fish'''. They pose a major threat to the health of commercially produced fish.