Thành phần loài cá trong kênh nội đồng tại ruộng lúa trong và ngoài đê bao ở Tri Tôn, Chợ Mới và Châu Phú, tỉnh An Giang

Abstract

This study was conducted from 8/2018 to 7/2019 at 6 sampling sites from 3 areas of river-dune, along the Hau River and limestone mountains inside and outside dikes at Tri Ton, Chau Phu and Cho Moi, An Giang province. Samples were collected directly by fyke nets, weir nets, cast nets, and indirectly by fishermen during three successive rice crops. We identified 54 fish species of 11 orders and 20 families. The fish species inside the dikes outnumbered those outside the dikes in each and all three ecological areas. The number of fish species in Crop 2 was largest (42 species), while those in Crop 3 and Crop 1 were 28 and 22 species respectively. Fish species at these research areas could be affected by both natural and artificial factors.