The economic and social development of the country, expand. Result in a degraded environment down. Varied spread of species, fish and fresh water animals by nature.
The economic and social development of the country grew. As a result, the environment deteriorated. Not conducive to the species of fish. And freshwater natural
The economic and social development of the country expanded. Due to the environment worsen. Unfavorable to propagation of fish. And the freshwater naturally.