Toxicity Responses of the Fish Behaviour and Morphological Changes at Chromium Chloride in Hetropneustes fossilis

The current aquatic studies of toxicity chromium chloride depond on biotic or abiotic factors i.e. temperature, concentration Metal Salt Oxidation, PH, values, alkalinity, salinity and hardness water. experimental fish caused external behaviour responses observed were rest lessens, jumping, erratic swimming, gulping air at the surface, loss equilibrium sluggishness, opercular movements fishes lied water surface before death morphological changes like, discoloration skin pigmented patches body, shedding scales sedimentation chemical mucous secretion ballooning in exposed animals data shown H. fossilis can be used as a good bio-indicator for heavy metal contamination fresh bodies.