Behavioural characteristics of juvenile Atlantic salmon in two competitive contexts.

<p>The behavioural characteristics of dominant (black dots) <i>vs.</i> subordinates (white dots) Atlantic salmon (<i>Salmo salar</i>) before and after the addition of either intraspecific (A and C), or interspecific (the exotic rainbow trout; B and D) competitors. The distance each fish was from the food source (upper panel), and the time each fish spent being active (lower panel) were used to characterize the behaviour of dominant and subordinate salmon.