Figure 1
From: Positive effects of bubbles as a feeding predictor on behaviour of farmed rainbow trout
Median (quartiles: 25%, 75%) percentage of fish group activity (% of differing pixels between two successive images) on (A) day 1 and on (B) day 12 of conditioning. Activity is measured in the bubble area during the 15 s of bubbles until the 5 s of time gap after bubbles for all treatments, corresponding to the period before the expected feeding for treatments BUBBLE + TIME and BUBBLE (total analysis duration of 20 s). The black point inside boxes represents the mean value (Tukey post-hoc tests).
