Volume 2 Issue 2

Study of aquatic biodiversity of Nethai River in Bangladesh

Author(s): B. K. CHAKRABORTY AND M. J. A. MIRZA

Abstract: A total number of 57 species of fishes, three species of prawn, one species of crabs and four species of reptiles were identified so far from the Nethai River in Bangladesh. About 10 types of fishing gear and craft were found in operation. Increasing rate of seine net (Kapuri jal) and gill net (current jal) were identified as detrimental gear killing including different species during post spawning periods. The increasing rate in exploitation of the water bodies a thread to aquatic biodiversity of the Nethai River. The total production of upper and lower stretch was decreased from 82.79 to 37.25 mt and 92.82 to 41.45 mt within five years and the total production had sharply decreased from 100% to 42.62% and 100% to 44.07% over the same period. As a result, a number of commercial important fish species like as major carps, mohasher (Tot tor, Tor putitora), nandina (Labeo nandina), olive barb (Puntius sarana) and reptiles (Kachuga kachuga and Morenia petersi) was extinct.

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