Physico-chemical parameters and ichthyofauna abundance of Dharmasagar reservoir of Warangal district (T.S.) India

Abstract

The present investigation deals with the study of physico-chemical parameters and bio-diversity of fish fauna in Dharmasagar reservoir. The physico-chemical parameters such as Temperature, Electrical Conductivity (EC), Total Dissolved Solids (TDS), pH, Dissolved Oxygen (DO), Total Alkalinity, Free Carbondioxide (Free CO2), Chlorides, Total Hardness and Biochemical Oxygen Demand (BOD) were estimated. The study was also made to record the fish fauna from this reservoir, which revealed that there are 14 species of fishes recorded. The fishes were identified in to species level and their abundance was estimated and discussed. The water temperature was less than 34 °C, pH was 8.5. Total alkalinity range up to 250mg/l. DO and CO2 of water ranged from 5 to 12 mg/l. Hence, it is estimated that all these values are within the permissible limits.