Frequency distribution of fish tracks detected by acoustic target strength (A) before and (B) after the closure of Qiantang River in Zhejiang, China.

  Part of: Zhang A, Luo W, Wang J, Zhou Z (2021) The time-area fishing closure impacts on fish stock; Qiantang River before and after a four-month fishing closure. Acta Ichthyologica et Piscatoria 51(4): 349-356.