Size frequency distribution
The size frequency distribution of the four abundant species was analyzed. Size of the collected fishes throughout the present study ranged from 3 cm (A. dispar and S. maderensis) to 21.5 cm (Mugilidae). Fishes of Mugilidae (6.5–21.5 cm) and Chanos chanos (8–18.5 cm) seem to have the full size range ( Table 4). Juveniles of G. oyena varied in size from 5.5 cm to 9.5 cm. Most fishes lie in the intervals from 6 to 8 cm where 36 fishes forming 85% of all collected fishes were recorded.