Effects of Constant Water Flow on Endurance Swimming and Fatigue Metabolism of Large Yellow Croaker

A trend in large yellow croaker (Larimichthys crocea) aquaculture is to establish production sites suitable for extreme weather conditions. However, continuous and strong currents can harm fish welfare. To determine a site location, the swimming ability of croakers must be assessed. This study aims provide novel insights into physiological characteristics reference fishing cage selection. Currently, research on has focused behavior analysis. Herein, we investigate effects croakers’ metabolites by examining preferred speed group sustained single-tailed fish. We evaluated factors that influence croaker’s fatigue quantifying metabolite contents constructing model. The results showed populations tend grow low-velocity environments, similar their traditional habitat. samples were taken at different times flow velocity 0.35 m/s. According content analysis, blood glucose levels are closely associated with croakers. liver glycogen, which regulates concentration, decreased certain linear relationship. model was constructed according changes glycogen content. Based our findings, recommend following: (1) size approximately 13.5 cm (approximately 1 year old), water inside should not exceed 2.6 BL/s; (2) concentration limits croaker, providing studying other