Table S1. Output from the first-stage principle component analysis (PCA) tests representing foraging, sociality, and movement behaviours, along with a second-stage PCA generated by combining six components from the initial three PCAs. Behavioural measurements PCA loadings Variable description Foraging PCA PC1: Satiation PC2: Foraging ability Variance explained (%) 39.61 38.97 Eigenvalue 1.2 1.12 Foraging score -0.15 0.88 Ranked score based on the majority (~75%) of fishes’ reaction to the feed stimulus and position in the barrel before and during the feeding bout. Length of feeding bout (s) -0.67 -0.56 Time taken for the total fish to consume feed. Latency to return to normal 0.85 -0.27 Time taken for the majority (~75%) of fish to resume normal behaviour post-feeding (s) behaviours post-disturbance. Sociality PCA PC1: Station PC2: Group holding cohesion Variance explained (%) 40.81 35.25 Eigenvalue 2.58 1.22 Average swim velocity (ft/s) -0.21 0.52 Average swim velocity as a measure of distance (cm) / time (s) on a subset of fish (n=40 per trial). Cohesion score -0.64 0.64 Ranked score, based on the majority (~75%) of fishes’ distance from each other while swimming. Depth score 0.09 0.95 Ranked score, based on the majority (~75%) of fishes’ distance to the surface and distribution throughout the water column. Direction score -0.82 0.41 Ranked score, based on dominant direction the majority of (~75%) fish are swimming.
Table S1. Output from the first-stage principle component analysis (PCA) tests representing foraging, sociality, and movement behaviours, along with a second-stage PCA generated by combining six components from the initial three PCAs. Behavioural measurements PCA loadings Variable description Foraging PCA PC1: Satiation PC2: Foraging ability Variance explained (%) 39.61 38.97 Eigenvalue 1.2 1.12 Foraging score -0.15 0.88 Ranked score based on the majority (~75%) of fishes’ reaction to the feed stimulus and position in the barrel before and during the feeding bout. Length of feeding bout (s) -0.67 -0.56 Time taken for the total fish to consume feed. Latency to return to normal behaviour post-feeding (s) 0.85 -0.27 Time taken for the majority (~75%) of fish to resume normal behaviours post-disturbance. Sociality PCA PC1: Station holding PC2: Group cohesion Variance explained (%) 40.81 35.25 Eigenvalue 2.58 1.22 Average swim velocity (ft/s) -0.21 0.52 Average swim velocity as a measure of distance (cm) / time (s) on a subset of fish (n=40 per trial). Cohesion score -0.64 0.64 Ranked score, based on the majority (~75%) of fishes’ distance from each other while swimming. Depth score 0.09 0.95 Ranked score, based on the majority (~75%) of fishes’ distance to the surface and distribution throughout the water column. Direction score -0.82 0.41 Ranked score, based on dominant direction the majority of (~75%) fish are swimming.