Fig. 2From: Heart rate and swimming activity as indicators of post-surgical recovery time of Atlantic salmon (Salmo salar)Average a heart rate and b activity values (blue line) from all fish in tanks 1, 2 and 4 (tank 3 was excluded because of aggressive behaviour between two males) for the first 2 weeks post tagging. The light-blue envelope shows the range in heart rate values of all individualsBack to article page