Pertumbuhan dan Biologi Reproduksi Ikan Lidah (Cynoglossus lingua) yang Didaratkan di Tempat Pendaratan Ikan (TPI) Gabion Belawan Provinsi Sumatera Utara

Abstract

One of the fish that is landed at the Gabion Fish Landing Site in Belawan that is economically useful is the tonguefish. The availability and sustainability of tonguefish resources in Belawan waters are thought to be impacted by the salted fish industry's use of small Tongue fish and the strong public demand in the product. The objectives of this study are to ascertain the growth patterns, mortality, and exploitation rates, as well as the reproductive biology, of tonguefish that land at TPI Gabion, Belawan. In order to ensure that the samples obtained accurately represented the fish population under study, this research employed a random purposive sampling technique. Tongue fish data on growth, reproductive biology, fish mortality, and exploitation rates were analyzed. The findings demonstrated that tongue fish had a flat body shape and a negative allometric growth trend. Fish have a total mortality rate (Z) of 1.45 and an exploitation rate (E) of 0.77. Results in fish reproductive biology included an uneven sex ratio, a 1.62% average IKG value, a partial spawner spawning pattern, a fecundity of 143–20,782 eggs, a Lm value of 198.968 mm for the female tonguefish, and a and a Lc value for the male tonguefish. 242.48 mm in females and 299.73 mm in males.