Research on Acoustic Monitoring of Escape of Large Yellow Croaker Cultured in Cages

It is an important problem for large yellow croaker culture to escape due to the damage of net coat. In this study, a horizontal moving fish finder was installed in a cage to monitor large yellow croaker groups with different numbers and body lengths by acoustic means, and the behavioral characteristics of fish groups were observed after the experimental net was damaged by using the nesting method. Through the identification of large yellow croaker group individual, swimming speed, size, direction and other group behavior characteristics, in order to prevent the escape of fish, set green (normal), yellow (ordinary alarm), red (strong alarm) three state display. This study will provide technical support for the more scientific and safe development of large yellow croaker cage culture.