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Updated: May 2, 2026

Assessment of Swim Endurance and Swim Behavior in Adult Zebrafish
Published on: November 12, 2021
Are zebrafish Danio rerio males better swimmers than females?
I Leris1, D G Sfakianakis, M Kentouri
1Biology Department, University of Crete, P.O. Box 2208, Heraklion, 71409, Crete, Greece; Biology Department and Helmholtz Institute, Utrecht University, P.O. Box 80086, Utrecht, 3508TB, The Netherlands.
Abstract:
Swimming performance of zebrafish Danio rerio males and females initially reared in four different temperatures was assessed by measuring their relative critical swimming speed after acclimation to a common temperature. Males reared at 31° C achieved higher swimming speeds than females reared at the same temperature. Morphometric measurements indicate differences in body shape between sexes that could account for the difference in swimming speed.

