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ABSTRACT
Age, growth, and reproduction of Chalcalburnus belvica from Lake Mikri Prespa (NW Greece) were analyzed using scale readings and size frequency histograms. Males aged 1+ and 2+ were dominant in the catches; high mortality at ages 3+ and 4+ precluded their occurrence at older ages. Females always had a higher mean observed length than males of the same age and grew to age 8+. The weight-length relationship was allometric with b coefficients greater than 3 for both sexes. C. belvica matures genitally at age 1+ in both sexes. Reproduction occurs in the lake, in contrast to other fish species of the same genus which migrate to the rivers to reproduce. The reproduction pattern reveals a prolonged spawning period from April to August, with multiple egg sheddings. Von Bertalanffy's growth equation yields a rather low growth rate (k = 0.230) and a relatively high maximum fork length (L∞ = 250 mm).