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 Library > Diseases and Medications > The Medicine Cabinet > Introduction to Freshwater Fish Parasites |
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Introduction to Freshwater Fish Parasites | |
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Page 13 of 14 | Pages: 1 . 2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 . 10 . 11 . 12 . 13 . 14 | |
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Lernaea Lernaea, also known as anchor worm ( Figure 25 ), is a common parasite of goldfish and koi, especially during the summer months. The copepod attaches to the fish, mates, and the male dies. The female then penetrates under the skin of the fish and differentiates into an adult. Heavy infections lead to debilitation and secondary bacterial or fungal infections. Removal of the parasite by hand with forceps may control lernaeid infestations with careful monitoring of the wound. A 3% salt dip followed by 0.2%-prolonged immersion has been used to effectively control Lernaea in goldfish and koi ponds. 
Figure 25: An illustration of an Lernaea.
Argulus Argulus or fish louse is a large parasite ( Figure 26 ) that attaches to the external surface of the host and can be easily seen with the unaided eye. Argulus is uncommon in freshwater aquarium fish but may occur if wild or pond-raised fish are introduced into the tank. It is especially common on goldfish and koi. 
Figure 26: An illustration of a fish louse.
Individual parasites can be removed from fish with forceps, but this does not eliminate parasites in the environment. A prolonged immersion of 0.02 - 0.2% salt may control re-infection to the fish host. more ... |
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