Metals Concentrations in Tissues of Tilapia Gallier, Crarias Lazera and Osteoglossidae Caught from Alau Dam, Maiduguri, Borno State, Nigeria (Technical Report‪)‬

INTRODUCTION Heavy metals in aquatic environment are a major concern because of their toxicity and threat to plant and animal life disturbing the natural ecological balance. The specific problem associated with the heavy metals in the environment is their accumulation through food chain and persistent in nature. Uptake of heavy metals such as Copper, Nickel, Manganese, Lead, Cadmium, Iron and Cobalt through the food chain in human being may cause various physiological disorders like hypertension, sporadic fever, nausea and renal damage (1). Heavy metal pollution and its management has been a major global concern for environmentalist due to their non-biodegrable and hazardous nature.