Big-mouthed catfish is bigger than native catfish, which has spots on its body and is smaller. Silurus meridionalis is a large individual, which can grow up to 60 kg at the largest, generally more than 2 kg, with a dark gray body surface and a few spots on it.

Catfish:

Basically, they are distributed in the south of the Yangtze River, belonging to economic fish. Because of their fast growth, most of them are used as cultured fish and supplied to the market. So the catfish bought in the market are basically of this variety.

Silurus asotus:

Soil catfish are distributed all over the country. Most of the catfish caught by fishing friends in the north are soil catfish, and the individuals of soil catfish are generally small, ranging from 6 Liang to 1.5 Jin, and the maximum is 5-6 Jin.