EpsilonretrovirusEpsilonretrovirus is a genus of viruses in the family Retroviridae.TaxonomyThe genus contains the following species, listed by scientific name and followed by the exemplar virus of the species:Epsilonretrovirus waldersar, Walleye dermal sarcoma virusEpsilonretrovirus walepihyp1, Walleye epidermal hyperplasia virus 1Epsilonretrovirus walepihyp2, Walleye epidermal hyperplasia virus 2