Table 1. Swimmill equipments.

The absolute value of U_crit measured in adult wild-type zebrafish (3-12 months old) appears to vary by the difference of the swimmill equipments. This is probably due to the size difference of swimming chamber that generates uneven water flow between center and peripheral. Therefore, the comparison of U_crit should be done in the assays that use the same equipment.

Swimmill	Ucrit (cm/s)	References
		Massé et al., 2013
Swim Tunnel Respirometer model 170 ml		Thomas et al., 2013
230 V, 50 Hz	25-40	Lucas et al., 2016
Loligo Systems #SW10000		Parisi et al., 2018
		Wakamatsu et al., 2019
Swim Tunnel Respirometer model 5 L 230 V, 50 Hz Loligo Systems #SW10050	70-90	Gemberling et al., 2015 Mokalled et al., 2016
Swim Tunnel Respirometer model 10 L 230 V, 50 Hz Loligo Systems #SW10100	40-80	Gilbert et al., 2014 Conradsen and McGuigan, 2015 Conradsen et al., 2016 Messerli et al., 2020
Swimmill system made by the author	50-65	Plaut, 2000
Swimmill system made by the authors	55	Palstra et al., 2010
Swimmill system made by the authors	25-30	Leris et al., 2013
Flume	35-45	Widrick et al., 2018