title: Digestive enzyme activities of African catfish and Nile tilapia reared in RAS
abstract: The article considers morphological parameters and the activity level of digestive enzymes of African catfish and Nile tilapia grown at Volgorechensk Fish Farm in Volgorechensk, Kostroma Region. It was found that the fish had the characteristic fatness for their species (the fatness coefficient according to Fulton was 3.25±0.08 for tilapia and 0.93±0.06 for African catfish). It was found that the "intestine weight" parameter has the greatest variability in tilapia, and the "intestine length" par
journal: BIO Web of Conferences