Author(s):

Shah Pinkey

Abstract: Fish survey were undertaken during August 2015 to January 2016 to predict the diversity of the fishes in Koshi Barrage. An attempt has been made to survey the existing fish diversity in six months of duration in two consecutive seasons (rainy and winter). Fishes caught alive or in fresh condition were preserved in 9-10% formalin solution. The fishes were collected, fixed and labeled giving serial numbers, the name of exact locality from where they have been collected; date of the collection and the common local name on each jar. The fishes were identified and finally species diversity was calculated, which is not yet focussed at this site. Knowledge of highest diversity in a particular season can be a most useful tool for the aquaculture for both quantity and quality harvesting of the fishes. With this point of view, the research has been conducted. Species diversity was found to be higher in winter (1.47) than in rainy season (1.18).

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