The aim of this study was to analyze the composition of commercial purse-seine catches collected in the Croatian fishing grounds during a one-year period (June 2011 - June 2012). Within samples, sardine Sardina pilchardus (Walbaum, 1792) (N = 10317, LT= 14.60 ± 0.70 cm) and anchovy Engraulis encrasicolus (Linnaeus, 1758) (N = 9831, LT = 13.79 ± 0.60 cm) were the dominant species (92.1%). In addition to this species, individuals of chub mackerel Scomber colias (Gmelin, 1789) (N = 75, LF = 17.73 ± 1.82 cm), bogue Boops boops (Linnaeus, 1758) (N = 31, LT = 18.07 ± 2.12 cm), Mediterranean horse mackerel Trachurus mediterraneus (Steindachner, 1868) (N = 151, LT = 13.99 ± 1.28 cm) and Atlantic horse mackerel Trachurus trachurus (Linnaeus, 1758) (N = 34, LT = 19.44 ± 4.03 cm) were found. Apart from length-frequency analysis, the length-weight relationship of these species was also obtained.