The warblebill, also known as big whitefish and warblebill bleak, is a pelagic fish species.

The warble mouth fish, scientifically known as the warble mouth bleak, is a wide-temperature fish, is a kind of pelagic fish species, but also a kind of ferocious carnivorous fish, widely distributed in all regions of the country's waters, is a kind of fish that anglers often fish. Its body is characterized by flat pieces of willow leaf-like, eyes and mouth are large, like to live in the middle and upper layers of the water. In the seedlings to the water plankton for food, grow to one to two pounds or so will prey on small fish, shrimp, insects and so on.

The warthog is widely distributed in large and small lakes, the Yangtze River Basin, reservoirs and ponds and other waters have its figure. Bleak likes to live in bays, coves, aquatic grass areas, shallow and open water. Bleak is quite adaptable to temperature and can live and be active in low water temperature of about 5℃ and high air temperature of about 36℃. Bleak's sense of sight and smell are very sensitive, and it is very gluttonous. As long as there is a lot of food, the bleak will stay.

Characteristics of Bleak

Bleak belongs to the middle and upper layer of large freshwater fish, swift and good jumping, irritable and easy to be frightened, it is a ferocious carnivorous fish that feeds mainly on live fish; it mainly eats small fish and shrimp, and it also eats a small amount of young plants, ingests the water temperature of 3～36℃, the optimal water temperature of 15～32℃, and it is capable of surviving in water bodies that are large or small, and it is resistant to low oxygen.

Bleak is a predatory fish with ferocious temperament, and with the increase of weight and body length, the predatory nature of bleak will also change. In the juvenile period, due to its small mouth cleft, its predatory ability is limited, mainly feeding on insects, branchiostoma and copepods; when the body length reaches 15cm, it starts to prey on other fish, and with a body length of 25cm, it mainly preys on small and medium-sized pangolins, mackerel, breams, etc. It is one of the top predators in the natural waters.