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Objective: Isolation and identification of fungi from gill
lesions.
Samples: Gill speciemens from the common carp
(Cyprinus carpio), silver carp (Hypophthalmichthys molitrix), grass carp (Ctenopharingodon idella). Procedure: The samples were obtained from the five fish farms in Mazandaran province and transferred to
mycology laboratory with ice condition. The samples were inoculated in culture media (Sabouroed glucose agar, glucose pepton agar and corm meal agar+ choloramphenicol).
Statistical analysis: Chi-square and t-test.
Results: Thirty-nine species of fungi were isolated from
the gill lesions. The most important pathogenic fungi were Branchiomyces, Saprolegnia, Fusarium, Phoma and
Exophiala. The most frequency isolated fungi were
Fusarium (46.4ko¾1) and saprolegnia (25ko¾1), whereas Exophiala (3.6ko¾1) was showen the lowest frequency. Conclusion: This is the first report of isolation of
Branchiomyces, Phoma and Exophila from fish in Iran. It
is concluded that the above-mentioned isolated pathogenic fungi may play an important rule in fish diseases. Thus,
this study should be continued into the future.
J.Fac.Vet.Med.Univ.Tehran. 60,1:15-19,2005.