Studies on Diversity of Fishes and Macrofauna of Koshi River Near Madhepura District Bihar

Abstract

In this research work we have considered the introductory part regarding “Studies on Diversity of Fishes and Macrofauna of Koshi River near Madhepura District, Bihar”. Fish are a crucial component of top-notch non-vegetarian cuisine. These are a fantastic and abundant source of protein for the diet. Many nations rely on the production of fish for their economic survival. India is home to the ninth-largest amount of freshwater biodiversity in the world. The primary areas of interest in ecological research are the variables that impact species richness. The availability of food in the water resource determines the growth and survival of the fish species. Fish eat mostly phytoplankton and zooplankton as their main sources of nutrition. The survival of the fish faunal diversity depends significantly on both the availability of food and the physico-chemical conditions of the water. Numerous ecologists have noted that the abundance and variety of fish in any aquatic habitat are at odds with the external environmental conditions. Physical and chemical properties of the water, including its PH, conductivity, hardness, alkalinity, temperature, and others, govern its quality and, in turn, the productivity of its fish species. The physio-chemical properties of the water also have an impact on zooplankton and phytoplankton, which are fishes' primary sources of nutrition.