Ichthyodiversity of a small coastal river in Bangladesh

Small rivers are often ignored in terms of conservation actions and biodiversity management Bangladesh. Despite having significant ecological economic importance these rivers, there is limited study done so far. To partially fulfill this gap, aimed to assess the fish shellfish a small coastal river named Tiakhali from southern A total 26 finfish 7 species were identified where 50% all order Perciformes Decapoda, respectively. Results showed that 76.9% categorized into least concern category based on IUCN Red List. Estimated Shannon’s, Margalef’s, Buzas & Gibson’s Simpson’s indices 1.189, 2.649, 0.435 for 1.662, 0.758, 0.224 shellfish, This river’s was comparatively smaller than big rivers. The findings might serve as baseline future works will help policymakers pay attention conserve such their future. Dhaka Univ. J. Biol. Sci. 32(1): 1- 10, 2023 (January)