Chemicals endanger fish resources
FISH is the cheaper and main source of dietary protein for the nearly 150 million people of Bangladesh and will be depended upon in the diet for all aspects of nutrition by an even bigger population in the future. But this source of nutrition is already under a threat due to dwindling reproduction of various species of sweet water fishes. Bangladesh in the past was home to four or five hundred species of fishes. The number has dwindled down to two hundred and fifty such species with the others becoming extinct.