Pathogenicity of Aeromonas hydrophila, previously isolated from kidney of apparently healthy silver carp, was tested in silver carp Hypophthalmichthys molitrix. Trials were also made to control the pathogen in the experimentally infected fish. Before artificial infection the morphological, biochemical and physiological characters of A. hydrophila were studied. The infection was done by intramus...

In the present investigation a total of six parasite species, some eye-specific and others non-organ specific parasites were found in the eyes of 48 examined fish species, collected from fresh and brackish waters of Iran during 2004-2006. Ichthyophthirius multifiliis  was isolated from the external surface of the eyes of Oncorhynchus mykiss, Gyrodactylus stankovici from Cyprinus carpio and Lern...