Current state of biology, stocks and fishery of atherina (Atherina boyeri caspia (Eichwald)) in western part of Middle and Northern Caspian

The article considers the original results of observations and analysis catches atherina (Atherina boyeri caspia (Eichwald)) by months stationary nets in Terek-Caspian fishery subarea (Republic Dagestan). size-weight age indicators spawning stocks have been characterized. For first time recent years conditions for western part Middle Northern Caspian are described. All biostatistical obtained (2016–2021) listed: average linear weight parameters, fatness coefficient according to Fulton (0.944) indicate a high fattening fish. Size composition females males, age-related fluctuations length weight, comparative concentrations, characteristics reproduction Caspian, fecundity different groups, quantitative distribution roe, larvae fry atherina, as well dynamics from prove satisfactory state this fish species. Comparative analyses autumn concentrations 1958–1963 2018–2021 presented, spp/h trawling, period (2016–2021). It has found that Sea is main object by-catch when fishing kilka with seines (in 56.3 tons per year); it plays an important role food component many species (sea herring, sturgeon) mammals (Caspian seal) living waters Sea. Prospective volumes processing fishmeal also considered time. On scale Sea, intensive by-catch, possible catch amount 150–200 tons. Despite small volumes, they would significantly cover deficit feed. Due increasing population natural required actively involve processes organizations order maximize development commercial stock.