Wilcoxon pair-wise comparisons* testing for behaviour differences between repeated runs of four behaviour assays, data pooled for mid-season and late season.

*Catch time was recorded four times and for these comparisons we used Friedman nonparametric tests of multiple dependent variables (χ2), using only those fish that were measured all four times. Pairwise comparisons for all four measures of catch time were subsequently tested with Wilcoxon.