Figure 1. Motor measures of zebrafish in the novel tank test (Experiment 1).

There was a significant effect of time on (A) the total distance traveled per minute and (B) the mean ambulatory speed in the novel tank test (6 minutes). All fish generally swam longer distances at faster speeds due to habituation to the novel tank, but there was no effect of 7 days of chronic unpredictable stress and no interaction between stress and time on motor measures (N = 25 in each group).