Kebiasaan Makan Ikan Kembung Lelaki (Rastrelliger kanagurta) yang Didaratkan di Tempat Pendaratan Ikan (TPI) Pantai Labu Kabupaten Deli Serdang

Abstract

Research on the food habits of Indian Mackerel (rastrelliger kanagurta) at the TPI Pantai Labu, Deli Serdang Regency, which was carried out in September – November 2022. The number of Indian Mackerel samples in this study were 264 individuals. The total length of the observed fish between 120 – 335 mm. The growth pattern of mackerel is positive allometric where weight gain is more dominant than length growth. Condition factor values ranged from 0.282 to 2.620 with an average of 1.047 so that the fish were classified as less flattened, the sex ratio of the fish was in an unbalanced condition, the level of gonad maturity was at TKG I – TKG IV. The relative gut length of mackerel is 1.19 so that the fish is classified as an omnivorous fish, index of stomatch content ranges from 1.012 to 1.018. The main food for mackerel is phytoplankton, complementary food is zooplankton and gastropods, additional food is worms, squids, anchovies and shrimp.