Threat to Fish Fauna

Fish are among the most threatened vertebrates worldwide. In freshwater, dangers are posed by water pollution, straightening, weirs and dams, introduced species (neozoa), as well as the introduction of chemicals from agriculture, industry, and cities. Despite the seemingly infinite expanse of the oceans, marine fish are threatened by commercial fishing, sport fishing, wastewater from fish farms, settlements, industry, and agriculture, as well as neozoa. Coral reefs and thus all fish living on or in the reef also suffer from global warming, international trade in coral fish, and tourism.