Assessment of Toxicity in Fresh Water Fish Labeo Rohita Treated | Original Article

ABSTRACT:

The term toxicity is used to describe the potential for a material to harm or kill living organisms. Acute toxicity tests are used to determine if a substance or effluent, in specific quantities, is harmful to a group of test organisms under controlled conditions of exposure for a relatively brief period of time. Population increase, rapid urbanisation, rapid industrialization, and rapid agricultural development have all had a major impact on water quality and availability in India. Human actions including oxygen depletion, increasing BOD COD loads, and alterations in water clarity, pH, phosphate, and nitrate levels are to blame for eutrophication and the degradation of water quality. Aquatic organisms are particularly vulnerable to environmental pollution. Ecological exploitation has put aquatic ecosystems including plankton, fish, and invertebrates under tremendous pressure. Here, fish bioassays might prove to be a useful tool for assessing the state of water that has been polluted with a wide variety of potentially hazardous substances. Fish bioassays have revealed a wide variety of pathological effects, including stunted development, in polluted river water. Both generalizable and target-specific effects can be investigated through bioassay research. An organism is able to successfully deal with the challenge of survival in a changing environment because of its behavior, which allows it to adapt to both external and internal inputs.