In the territorial behavior of the stickleback fish, the red belly of one male elicits attack from another male by functioning as

In the territorial behavior of the stickleback fish, the red belly of one male elicits attack from another male by functioning as

In the territorial behavior of the stickleback fish, the red belly of one male elicits attack from another male by functioning as


A) a pheromone.
B) a sign stimulus.
C) a fixed action pattern.
D) a search image.
E) an imprint stimulus.

Answer: B