Journal Article
Measurement of Length and Swimming Speed of Golden Pompano (Trachinotus ovatus) in Offshore Cage Using Adaptive Resolution Imaging Sonar
Tianyi Li; Mingshuai Sun; Yan Wang; Huarong Yuan; Zhenzhao Tang; Zuozhi Chen; Jun Zhang
Journal of Marine Science and Engineering · Vol. 14, Issue 3 · pp. 314 · 2026
Abstract
Golden pompano (Trachinotus ovatus) ranks among the most commercially important and high-yield marine finfish species in Chinese mariculture. In response to the requirement for monitoring fish in aquaculture, this study employed Adaptive Resolution Imaging Sonar (ARIS) to observe the body length, swimming speed, and spatial distribution of untreated (GI group), anesthetized (GII group), and injured (GIII group) T. ovatus in a small offshore cage (1.5 × 1.5 × 2.5 m3). The results demonstrated that the relative error range of the length measurement of the T. ovatus spanned from −3.24 to 4.35, and there was no significant difference between the observed and actual body lengths (ANOVA, p > 0.05). We failed to detect a significant difference in the average speed between the untreated group and the anesthetized group (ANOVA, p > 0.05; Tukey’s HSD, p > 0.05). The injured fish exhibited a significantly lower swimming speed compared to untreated and anesthetized individuals (ANOVA, p