Purpose: to assess the state and operating conditions of fish passage channels Ust-Manych waterworks on river Western Manych. Materials methods. The factual basis for assessing was materials author’s survey field studies performed at given facility in 2022. were carried out according generally accepted methods conducting hydrometric measurements flow rate parameters geometric dimensions network...

The striped snakehead Channa striata is a valuable food fish and has high market value. feeding natural breeding grounds of this economically important species have been reduced due to increasing anthropogenic activities habitat alterations in the Gangetic River system. present study was undertaken assess reproductive biology C. striata, which widely distributed India many other Asian countries...

The paper presents the results of determining spawning grounds some fish species in Nha Trang bay MPA, which were sampled 9/2018, 11/2018, 5/2019 and 7/2019. analysis are based on distribution general density developmental stages, decision trees from egg density, location stations months by CHAID (Chi-square Automatic Interaction Detector), allowing a relatively accurate estimate ground red anc...

The passive bioacoustic technique has the principle of operation is to use underwater sound recording equipment, collecting signals emitted by fish during spawning season, analyze software, through which it possible identify identified species name, population size, and location broodstock in study area. In this study, we used a combination method analyzing density eggs larvae croaker Tien Yen ...

Climate change alters the thermal habitat of aquatic species on a global scale, generating novel environmental challenges during all life stages, including reproduction. Changes in water temperature profoundly influence the performance of ectothermic aquatic organisms. This is an especially crucial issue for migratory fish, because they traverse multiple environments in order to reproduce. In e...