Adaptations and Behavior Question
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A male three-spined stickleback fish will attack male red-bellied sticklebacks and models of fishes that have a red under side. It will not attack males or models lacking a red underside. What can you conclude from the three-spined stickleback's behavior?
- The stimulus for an attack is aggression.
- The stimulus for an attack is the presence of a fish with red fins.
- The stimulus for an attack is the presence of a fish model.
- The stimulus for an attack is a red underside.