“…Since 2020, the toolkit to quantify swim function has rapidly expanded and diversified. Traditional and recently established measurements of swim capacity include swim endurance as quantified by time to exhaustion against increasing water current velocities ( van Raamsdonk et al, 1998 ; Mokalled et al, 2016 ; Burris et al, 2021 ; Klatt Shaw and Mokalled, 2021 ; Saraswathy et al, 2022 ), maximum speed either against increasing water current velocities or in a static tank ( Chang et al, 2021 ; Huang et al, 2021 ; Hosseini et al, 2022 ; Huang et al, 2022 ), swim distance ( Becker et al, 2004 ; Burris et al, 2021 ), time active ( Burris et al, 2021 ; Saraswathy et al, 2022 ), time swimming against flow ( Burris et al, 2021 ), burst frequency ( Burris et al, 2021 ; Saraswathy et al, 2022 ), and average position of the fish against a water flow axis (“mean y”) ( Burris et al, 2021 ; Saraswathy et al, 2022 ). Although new quality measurements have been developed for larval fish including body angle ( Zeng et al, 2021 ), power spectral densities ( Vasudevan et al, 2021 ), and centerline posture kinematics ( Hossainian et al, 2022 ), published quality measurements for adult fish are limited to manual scoring of perceived swim ability ( Becker et al, 1997 ; Goldshmit et al, 2012 ; Strand et al, 2016 ), tail beat frequency and amplitude ( Huang et al, 2022 ).…”