Nauplius larvae were the main bulk of Copepoda at all depths of main channel, its density varied from 64% to 70% of total Copepoda at the three depths withthe highest average of 23,070 Ind. m3 at 10–5 m. These larvae decreased vertically with increasing depth during autumn, while attained its highest crop at 10–5 m depth in other periods. Copepodites decreased with increasing depth during winter and autumn and attained high crop at 10–5 m depth duringsummer and autumn