Chioveanu, Maria-CristinaStroe, Maria-DesimiraTenciu, MagdalenaAthanasopoulos, LilianaPatriche, N.2026-07-272026-07-272020https://repository.iuls.ro/handle/20.500.12811/6860This present paper has the purpose to analyze the influence of environmental factors on catches and family structures of fish in the Danube River, sector km 1020 - km 1071. The biological material was collected from the autumn fishing between August and November 2019. During the four months, following the scientific fishing, 1.250 fish specimens belonging to 7 species were collected. The dominant family, Cyprinidae with a percentage of 74%, is represented by four species, namely Cyprinus caprio (carp), Carassius gibelio (crucian), Abramis brama (bream), Ctenopharyngodon idella (grass carp), followed by the family Percidae with a percentage of 23% represented by two species Sander lucioperca (pikeperch) and Exos lucius (pike), and the family Siluridae with a percentage of 3% represented by Silurus glanis (catfish). Both temperature and water levels were raised in correlation with total catches.enCC BY-NC-SA 4.0https://creativecommons.org/licenses/by-nc-sa/4.0/DanubecapturesstockslevelstemperaturesArticle2821 - 6644