Милен Василев; Лъчезар Пехливанов [Milen Vassilev; Luchezar Pehlivanov]
10 June 2002 · volume 14
· pp. 103–108 · PDF [full text]
[no abstract available originally]
[Summary]: The Struma River is one of the three main rivers on the territory of Bulgaria flowing directly into the north part of the Aegean Sea. The length of its course on Bulgarian territory up to the frontier with Greece is 310 km. Till now a total of 35 fish species and subspecies, belonging to 8 families, have been announced by different authors for the ichthyofauna of the Bulgarian watershed of Struma. Twenty-nine fish species and subspecies have been established with certainty since 1990. Most of the fish species are representatives of both families Cyprinidae (18 taxa) and Cobitidae (6 taxa). The species Aspius aspius, a wild form of Cyprinus carpio, and Anguilla anguilla have not been found in recent years. The authors consider these species to have generally disappeared from the Bulgarian stretch of the Struma River. The ichthyofauna is enriched by other species: Rutilus rutilus mariza, Carassius carassius, Carassius auratus gibelio, Hypophthalmichthys molitrix, Pseudorasbora parva, Misgurnus fossilis, Lepomis gibbosus, Stizostedion lucioperca and Perca fluviatilis. Most of these species have been specially or accidentally introduced mainly in the Lobosh dam built on the Struma River. Most of the autochthonous fish species from the Bulgarian rivers of the Aegean Sea watershed are zoogeographically related to the Ponto-Caspian province of the Mediterranean subregion. Nine endemic taxa for Bulgaria and the Balkan Peninsula are also characteristic for the region of the Struma River: Rutilus rutilus mariza Drensky, 1926, Vimba melanops Heckel, 1840, Barbus cyclolepis Heckel, 1840, Chondrostoma vardarense Karaman, 1928, Leuciscus borysthenicus strymonicus Marinov et Jankov, 1989, Noemacheilus bureschi Drensky, 1928, Cobitis strumicae Karaman, 1955, Cobitis peshevi Sivkov et Dobrovolov, 1986 and Sabanejewia auraia balkanica Karaman, 1922.