The Impact Of Environmental Characteristics On The Growth Of Indian Major Freshwater Carps-Kendai

Our country has enormous scope for developing both marine and inland fisheries as a major industry. India has a long coastal line of 6,100 km with a vast area of continental shelf, spread on both the west and east coast were the fishing operations are carried out. The natural catching of fish and fishery production could not meet the exponential growth of world population. Existing ponds and swamp lands as well as agricultural system can profitably used for aqua food production. The maintenance of water quality is essential for both survival and optimum growth. The water quality parameter like temperature, transparency, dissolved oxygen, pH, carbon-di-oxide, salinity, calcium. The biological variables such as qualitative and quantitative study of phytoplankton, zooplankton and fish growth were analyzed, the readings were recorded on the twice a month. Surface temperature of culture pond of varies between 25.3˚C to 33.2˚C. The temperature is responsible for regulative some physiological process both under nature and artificial conduction. The hydrogen ion concentration of the pond has a little variation. The highest pH is (8.1 pH) of was recorded on first week of March, the CO¬2 is a limiting factor for the pH. The turbidity of water ranging from 35-41cm, normally turbidity of water affected by the growth of phytoplankton and rainwater inflow from the river. The oxygen content in a water body is the function of temperature as well as phytosynthesis and community respiration. The phytoplankton population gradually increased from December to March during the study period. The phytoplankton increase may be due to high light intensity. Among the three fishes in the order of cypriniforms like Catla catla, Labeo rohita and Cirrhinus mrigala maximum weight was recorded for the fish Catla than the other groups. An organisms which have direct influence on the activities of the organisms.