Figure 3
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) in the whole tank during the 6-min period preceding feed delivery. Results are given for each treatment and for the three feedings on (A) day 1 and (B) day 12 of conditioning. F1, F2 and F3 correspond to the three feedings analysed. The black point inside boxes represents the mean value. Different latin letters indicate significant differences between treatments, and different greek letters indicate differences between feedings (P < 0.05; Tukey post-hoc tests).
