Identification of ectoparasites of some ornamental fish, Isfahan Province

The current study was done with the aim of identification of ectoparasites of some aquarium fish including Carassius auratus auratus، Poecilia reticulata، Pterophyllum scalar and Colisa lalia. A total of 140 fish were randomly collected from Isfahan city in 2013، and were transported alive in appropriate condition to Fishery Reserch Center، Islamic Azad University، Shahrekord. Fish were kept in separate aquariums and were individually studied. The obtained results revealed that the studied fish were infested by Ichthyophthirius multifiliis، Trichodina sp.، Dactylogyrus anchoratus، Dactylogyrus spiralis، Dactylogyrus sp1، Dactylogyrus sp2، Trianchoratus sp.، Ancyrocephalus pseudorasbora and Gyrodactyrus sp. Overall، 64 0f 140 studied fish (46%) were found to be infested by parasites and the remaining were not infested. The highest infestation rate was found in gold fish (75%) and the lowest was observed in guppy (2. 5%). A. pseudorasborae and Trianchoratus sp. are reported for the first time in Iran which were collected from gold fish and dwarf gourami، respectively. Gold fish is also reported as new host for D. spiralis.