Аңдатпа
The features of growth, development and maturation of common catfish in the reservoirs of the Urals are studied. It is established that in the periods 1+ to 3+ the body length of the common catfish increases 2.29 times, the live weight up to 8.42 times. The ratio of live weight and length to the intestine in catfish 2+ is 1:0.43, in six-year-olds 1: 31.14 times. Sexual maturation of catfish occurs at the age of 4+ years, they have counted 86761 pieces of eggs, in six-year-olds 423810 pieces. or 4.88 times more.