Study on fish diversity in Dung island(Cu Lao Dung), Soc Trang province

Abstract

Study on fish diversity was conducted for 10 months from August, 2019 to June, 2020 in Dung Island, Soc Trang Province. Fish samples and water quality were implemented in 4 habitats of 12 sites including river/canal, garden pond, aquaculture farm and mangrove habitats by hand net, seine net and measuring equipments. The results showed that 67 species belonging to 22 families and 9 orders were identified. The most abundant order containing 43 species (64.18%) was Perciformes and the least was Synbranchiformes and Tetraodontiformes containing only 1 species (1.49%). Besides, Salinity had affected the distribution of fish composition. The number of fish composition in the mangrove habitat was higher than in other habitats. The highest number of species collected is mangrove habitat with 54 species (80.60%) followed by garden pond habitat with 38 species (56.72%), river/canal habitat with 36 species (53,73%) and aquaculture farm habitat with 35 species (52,24%). The results showed 56 species (83.58%) in the rainy season and 53 species (79.1%) in the dry season which abundant order were Perciformes with 35 species (66.04%) in dry season and 34 species (60.71%) in rainy season.