An example of a crustacean that parasites fish is the isopod (such as those found in the mouth and gill chambers of lingcod), the copepod (which can attach to gills or mouth lining), and the fish louse (Argulus spp. or Branchiura), which are common ectoparasites of both freshwater and marine fish.
An example of crustacean parasitic on fish is _____?
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