Assessing the selectivity level of sero fishing gear using 5 mm and 15 mm mesh sizes installed in the river estuary area

Abstract

Abstract Modifying the size of fishing gear nets from small to large is essential in catching fisheries to rebuild declining fish stocks in coastal areas, which will only be caught when they are gonadically mature. For example, sero equipment often catches young fish. Therefore, real action is needed to overcome this problem. This paper aims to increase fish stocks through experiments on existing sero equipment with 5 mm and 15 mm mesh sizes and compare different fish size structures and catches as a contribution to responsible fisheries management. The research method involved 12 experiments. The data was analyzed using various fingerprints (Anova) and continued with the BNT test. The results of this study show that the highest number of catches is the size of the 15 mm net, with a total catch of 132.893 kg. Then, in second place is the size of the 5 mm net with a total catch of 81.889 kg. In the BNT test analysis, the effect of the difference in net size can have a significant influence on fish catch. Fish caught from a group of benthopelagic organisms: freshwater, brackish, demersal, pelagic neuritic, and reef-associated.

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