|Comments: ||This is by far the most common virus to affect aquarium fish. Though it appears in both fresh and salt water tanks, it is much more common in salt and infects certain types of fish (especially angelfish and butterflyfish) more than others. In freshwater fish, the vast majority of Lympho cases are confined to animals that have been artificially dyed, due to the sharing of needles. Lympho is rarely fatal unless it is transmitted to internal regions, normally via the gills. Because it cannot be treated and since it is often introduced through damaged areas on the host, it is best to disturb afflicted specimens as little as possible outside from quarantining them. The disease will run its course with a much lower chance of spreading to other fish.|
Lymphocystis has been reported in assorted species from the following fish Families: Cyprinodontidae and Fundulidae (Killifishes); Cichlidae (Cichlids); Centrarchidae (Sunfishes and allies); Serranidae (Groupers); Ephippidae (Batfishes); Pomacanthidae (Angelfishes); Chaetodontidae (Butterfly Fishes); Mullidae (Goatfishes); Scatophagidae (Scats); Pomacentridae (Damselfishes); Labridae (Wrasses); Eleotridae (Sleepers); Gobiidae (Gobies); Siganidae (Rabbitfishes); Diodontidae (Porcupine Fishes). The disease is considered to be primarily a disease that affects the more evolutionarily advanced fishes by researchers, as thus far no cases have been reported in members of the Characidae and related Families, the Cyprinidae or any of the numerous Catfish Families.
Dr Adrian Lawler, Ph. D., the former supervisor of the Scott Aquarium, has reported and documented the disease in the following species: Dascyllus aruanus, Dascyllus melanurus, Chelmon rostratus, Pomacanthus semicirculatus, Zanclus canescens, Chaetodon capistratus, Platax orbicularis, Holacanthus ciliaris and the freshwater Sunfish Lepomis gulosus. Additionally, Aequidens rivulatus was reported as susceptible by TFH magazine in 1977 (article by Dr Harry W. Huizinga, with illustrations of an infected fish plus electron micrographs of tissue cited above).
Though there are many species of Lymphocystivirus, each one is capable of infecting only certain species of fish and those that are closely related.