Lernaea (Anchorworm) Infestations in Fish (FA185)

Figure 2. Koi infested with numerous female LernaeaLernaea species, commonly known as “anchorworms,” are crustacean, copepod parasites that can infect and cause disease and mortality in many types of freshwater fishes, especially wild-caught and pond-raised species. Infestations with Lernaea are most prevalent in the summer months and occur more commonly in stagnant or slow-moving water bodies. This 4-page fact sheet was written by Natalie Steckler and Roy P. E. Yanong, and published by the UF Department of Fisheries and Aquatic Sciences, December 2012.
http://edis.ifas.ufl.edu/fa185

Argulus (Fish Louse) Infections in Fish (FA184)

Figure 1. Adult Argulus sp. Note eye spots and round suckers on “head” end, and spermatheca on “back” posterior end.Argulus species (Family: Argulidae), more commonly known as fish lice, are members of a large group of branchiuran parasites that infest and cause disease in fish. The argulids are crustaceans and are related to crabs, lobsters, and shrimp. This 5-page fact sheet was written by Natalie Steckler and Roy P. E. Yanong, and published by the UF Department of Fisheries and Aquatic Sciences, November 2013.
http://edis.ifas.ufl.edu/fa184