Upstream migration capacity of <i>Acrossocheilus fasciatus</i>: Behavioral strategies in response to hydraulic conditions and implications for low-head weir designtranslating…

by Bin Wang, Gang Xu, Lei Fu, Aiju You, Zeqi Xu, Yue Ling Current fishway design guidelines are mostly derived from large anadromous fish species, with scarce species-specific data for small-bodied stream cyprinids such as Acrossocheilus fasciatus. This study investigated the upstream passage capacity of the cyprinid fish A. fasciatus over low-head weirs in relation to body length through controlled flume experiments. We quantified the passage success rate (PSR), behavioral strategies, and key