Impact of Agricultural Waste on Ichthyo Diversity of the Pumlen Lake, Kakching District, Manipur, India

The present research paper highlights the Ichthyo diversity survey conducted and impact of agricultural practices on Ichthyo diversity of Pumlen Lake, Tokpaching, an important lake in Manipur to evaluate the variation and distribution of freshwater fishes for future conservation plan and its effect by agricultural practices around the lake. The fishes are one of the main stable resources of the aquatic ecosystems that provide cheapest source of animal protein. Fishes are one of the leading elements in the economic standard of many nations as they have been a stable item in the diet of many people around the globe. Pumlen Lake locally known as Pumlen pat is the second largest freshwater wetland located in the southern part of the Manipur valley in Kakching District. Fish specimens were counted, photographed and identified to the lowest possible taxon. Fish species were identified and confirmed following standard literature (Jayaram, 1999, Talwar, P.K. and A.G. Jhingran, 1991 & Menon, A.G.K., 1999). Total number of species and total number of individuals were recorded from different locations. Maximum number of species belonged to the order cypriniformes followed by perciformes and siluriformes. During the study period we come across 41 species of fishes belonging to 27 genera, under 14 families and 7 orders. Of these, the most abundant is Trichogaster labiosa (5.37%), followed by Amblypharyngodon mola (4.84%) and Monopterus albus was least abundant (0.33%). During our study we came across different types of fish species. Demand of pesticides concentration on agriculture practices can diminish the accessibility of aquatic organisms that in order to serve as food for fish species and another aquatic organism. Impact of pesticides in various agricultural practices also affects the food chain of insect eating birds and also for fish species. It is also observed that the diversity of the fish species has been affected with the variation of agro-chemical and agricultural practices.