Stephens & Foraging - Behavior and Ecology - Chapter 9
Stephens & Foraging - Behavior and Ecology - Chapter 9
9 Foraging in the Face of Danger A juvenile coho salmon holds its position in the flow of a brook. To conserve energy, it positions itself in the lee of a small rock. Distinctive blotches of color on its sides, called parr marks, provide effective camouflage. As long as it holds its position, it is virtually impossible to see.