Proportion of fish stocks within biologically sustainable levels was 34,1 percent in 2015, and increased during subsequent years and peaked in 2018 and 2019 years (39,6 percent). In the following years, it received a downward trend and amounted to 30,3 percent in 2022. During this period, in fish stocks within biologically sustainable levels the proportion of herbs, kittens, eastern lungs, Kura (Azerbaijan), hedgehogs increased, while the share of mullahs, weights, tea, Caspian geese, ordinary nakha and ordinary cereals decreased.