Survey on fungal infection of freshwater aquarium fish in the Golestan Province

Subject Areas : New Technologies in Aquaculture Development

Received: 2021-02-13 Accepted : 2021-02-13 Published : 2015-08-23

Keywords: Golestan province, Skin, Ornamental fish, Gill, Keywords: Fungal infection,

Abstract :

Abstract[1] Sampling was done from skin and gills of 420 ornamental fish, from 7 species including: gouramis (Osphronemus gouramy), guppy(Poecilia reticulate, Poecilia latipinna), Brachydanio rerio, Barbus hexazona, Xiphophorus maculatus and Xiphophorus hellerii to survey the status of their fungal infection in reproduction and breeding centers in Golestan province. Samples were cultured on Sabaroud Dextrose agar (SDA) containing chloramphenicol. Then culture mediums were incubated at 23-26 °C for 10-14 days. Fungal colonies grown were evaluated both macroscopic and microscopic methods. In this study,  four types of fungi were isolated based on morphological characteristics that included: Aspergillus flavus Yeast, Mucor spp and Alternaria sp. The highest and lowest fungi infection that observed in the skin of the fish was Yeast, Alternaria sp. (10%) and Mucor spp (4%), respectively. Also, the highest and lowest fungi infection that observed in the gill of the fish was Yeast, Alternaria sp. (5%) and Mucor spp (4%), respectively. Most of the fungal infection in the skin was observed in X. hellerii, B. hexazona and O. gouramy (10%), also, minimum fungal infection in the skin was observed in Brachydanio rerio and Xiphophorus maculates (4%). Most of the fungal infection in the gill was observed in P. latipinna, X. hellerii and O. gouramy (5%) and minimum fungal infection in the gill was observed in P. reticulata and B. hexazona that no fungi was observed. * Corresponding Authors; Email: [e-mail]