A Comparison of Growth by Age Character of Fat Greenling, Hexagrammos Otakii in Heuksando of Korea

To compare and study the age and growth of Fat greenling, Hexagrammos otakii by age characters, the vertebrae and otoliths of 451 individuals caught from Heuksando, Korea from July 2022 to June 2023 were used. As a result of this study, vertebrae and otoliths were suitable as age characters. In both vertebrae and otoliths, the annual rings are formed once a year from October to November. The spawning season is from January to February, and it takes 9 months(0.75 years) for the formation of the first ring. For both vertebrae and otoliths, there was no difference in the growth equation of females and males for the total length(p0.05). The von Bertalanffy growth equation, estimated based on the total length(L), was Lt=638.560(1-eSUP-0.1392(t+1.0179)/SUP) for the vertebrae and Lt=614.578(1-eSUP-0.1508(t+1.0067/SUP)) for the otoliths. As a result of testing the growth difference between age characters, there were no significant difference(p0.05).