Abstract The size of the gill net in the waters of Pangkalan Terap Village is 2.5 inches, 3 inches and 5 inches, but its use is still based on the current season. This study aims to determine the effect of gillnet mesh size on catches, determine the number, type, weight and size of catches and determine the size of gillnets that are effectively used to catch fish in Pangkalan Terap Village. Th…