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Barbus pectoralis Heckel, 1843 is widely distributed in lakes and river systems of the west-, south-, and southeast Anatolia, Syria, Iran, and Iraq (Coad 1991, Geldiay and Balik 2007). Populations of this species are commonly found in a few rivers (Gediz, Bakircay, Buyuk Menderes, Aksu, Goksu, Orontes, Euphrates, Tigris) of Turkey, in rather cool running waters. Barbus pectoralis (formerly identified as B. capito pectoralis) is one of the nine barbel species inhabiting Turkish freshwaters and it is commonly known in the country as ‘biyikli balik’. B. pectoralis can be adapted quite easily to water regime changes. It is a benthopelagic species inhabiting both lentic and lotic environments and it has an economic value since it is commercially fished in reservoirs, lakes, and rivers (Geldiay and Balik 2007). Furthermore, it is a commercially important species also in Anatolia because of its wide distribution, its body size (max 40.4 cm, 700.0 g; Colak 1982) and its tolerance to different environmental regimes. There are several studies on the biology and ecology of B. pectoralis from several water bodies in Anatolia (Balik 1980, Colak 1982, Ergene 1998, Ikiz et al. 1998, Topkara and Balik 2004). In this paper, we provide new information on the age and growth of B. pectoralis from Kemer Reservoir. This may contribute to the species conservation and the management of its fisheries in the study area. Study area. The Kemer Reservoir is located in the city of Aydin, in west Anatolia (lat 37°32'N, long 28°32'E). The reservoir has an area of 14.75 km2 with a maximum depth of 52 m (April 2005). It was constructed on the Akcay Stream, one of the important tributary of the Buyuk Menderes River (Fig 1). The reservoir has an oligo-mezotrophic character (Ozyalin 2007). The fish species such as: Acanthobrama mirabilis, Chondrostoma meandrense, Capoeta bergamae, Silurus glanis, Carassius gibelio, Lepomis gibbosus, Cyprinus carpio, Petroleuciscus smyrnaeus, and Leuciscus cephalus are also present in Kemer Reservoir.

Age and growth of bassan barbel, <I>Barbus pectoralis</I> (Actinopterygii: Cypriniformes: Cyprinidae), under conditions of a dam reservoir