Blackfish are vicious, highly reproductive and have an insatiable appetite, often eating all the other fish in a given lake or pond. The blackfish can also glide over land, migrate to other waters in search of food, and can live out of water for up to three days. As early as 2,000 years ago was "Shennong Ben Cao Jing" with stone honey, bee seeds, beeswax (propolis), oysters, turtle shells, mulberry ticks octopus, sea clams, clams, carp, etc., listed as the top quality of insects and fish.

Blackfish individual large, fast-growing, high economic value. Blackfish has few bones and spines, high meat content rate, and rich in nutrients, higher than the protein contained in chicken and beef. Blackfish as medicine has to remove blood stasis to generate new, nourishing and tonic effect, after surgery, eating blackfish with muscle tonic blood, promote wound healing effect.

Blackfish is a valuable fish in the water, "fish in the treasures", is a comprehensive nutrition, meat flavor of high-level health care products, has always been regarded as a recovery from illness and the old and young people who are weak nourishing treasures.

Channel catfish is known as long-nosed shad, commonly known as the "river group", "Baiji", "fat head fish", "shad". In taxonomy belongs to the catfish order, fish family, shad genus. The longnose shad is a valuable freshwater fish in China, distributed in the Yangtze River system, up to the Yellow River to the north, and to the Minjiang River system to the south. Long-kissed shad fish body thick and long, abdominal expansion, the tail is lateral flat, catfish individual weight varies, generally 1500 ~ 2500 grams, a few individuals up to 10 kilograms.

Jiangsu Yancheng general catfish 2.5 kg price of about 12 yuan / kg. Comprehensive prices around the average to calculate, the price of blackfish is about 15 yuan / kg.