Diversity, Richness, Evenness and Dominance Index Fishes in Ami River Water, Gorakhpur, Uttar Pradesh, India

Abstract

The Ami River’s fish diversity was investigated using monthly samples collected from January 2020 to August 2021. The local community, industry, and fisheries all use the river’s water. The findings of the current inquiry show that there are 8 fish species that are members of 6 orders, 5 families, and 8 genera. In all sites where species were collected, the family Cyprinidae (42%), one order cypriniformes was the most prevalent 3 genera and each genera have one species Catla catla, Labeo rohita, and Chela atpar. Second most prevalent family-siluride (21%), order-siluriformes have two genera they have two genera each genera have one species Wallago attu and Ompaok bimaculatus. Although they were present, the number of order- siluiformes and family-Sisoridae (6%,), species-Bagarius bagarius, have lowest distribution, Clariidae (16%) order-siluriformes- Clariaus batracus, and Channidae (15%), order-anabntiformes, Channa punctatus, was quite low at all sites. Richness range 0.20 to 0.73, abundance range between 0.25 to 0.6, evenness range 0.01 to 0.02, Shannon-Weiner index (H΄) range 0.01 to 0.14, Simpson index of dominance (D), range 0.01 to 0.02, Simpson index of diversity (1-D), range 0.005 to 0.06, and Simpson ΄s reciprocal index (1/D), range 0.01 to 0.08. Reported data of all the three sites are also indicate low diversity, richness, and evenness of fish’s diversity as it classifies as low diversity. The dominance index also indicates low category in Ami River.