Abstract This research was conducted in February in the Meskom village, Bengkalis subdistrict, Bengkalis regency, Riau province. The purpose of this research was to determine the effect and differences in catches of drift gillnet by using the mesh size differences. The method used is a survey method. Catches of drift gillnet with 2 inch mesh size are Bombay duck, Slender shad, Shorthead hairfi…