In Banat`s waters was recorded two species of Gyrodactylus: G. elegans
from the gills of bream (Abramis brama danubii), and also in carp (Cyprinus carpio), on gills and
skin, and G. medius, found on body surface and gills of the young goldfish (Carassius auratus
auratus). A varieties of this two species are discussed. G. medius is a highly pathogenic
species for young goldfish and G.elegans can produced important outbreaks and damages in
carp culture. Formalin can be useful for the treatment of gyrodactylosis in goldfish, but it is
forbidden in carp culture. The surveillance of carp and goldfish gyrodactilosis is necessary, and
they must be included by the O.I.E. list of fish diseases like salmonid gyrodactylosis.