The average percentage of the fish school (n = 13) in sham/magnet (Arm 1) compared to the merged data from no-sham/magnet arms (Arm 2 & 3). There is significantly less fish in the arm with magnet present compared to the pooled no-magnet arms on average. There is also significantly more fish in the no-sham arms compared to sham arm (*** = p < .0005, Mann-Whitney U Test). This is a Spear Box Plot with the box showing 25% to 75% interquartile range and median represented as a red line, whiskers show minimum and maximum values. Magnet 1 minute: median = 7.69%, IQR = 15.39%; No Magnet 1 Minute: median = 38.46%, IQR = 38.46%; Magnet 5 minutes: median = 7.79%, IQR = 15.39%; No Magnet 5 Minutes: median = 38.46%, IQR = 38.46%; Sham 1 minute: median = 15.39%, IQR = 23.08%; No Sham 1 minute: median = 30.77%, IQR = 46.15%; Sham 5 minutes: median = 7.69%, IQR = 23.08%; No Sham 5 minutes: median = 30.77%, IQR = 46.15%.