Metal contamination in fresh waters is a great problem to aquatic life. The contaminants like heavy and toxic metals after entering into aquatic ecosystem and bioaccumulation in organs and tissues of aquatic organisms. Fishes are exposed of to these contaminates in the high concentration which bioaccumulated into the various organs and body fluids. The amount of metal ingested by the organism has been reflects the bioaccumulation of that specific metal in the tissues and organs. The amount of metal in different tissues depends upon the tissue type and metal type also. When these fishes have been consumed as a food by humans, these toxic ants get incorporated into human bodies and produce deleterious health effects.