Fish in a local lake have a mixture of brown and green scales and are found throughout the lake. Over a five-year period, the lake develops more plant growth and an exotic predatory frog is introduced. What change would you expect to see in the original fish population?

Question

Quizplus · Accepted Answer

The increase in plant growth could benefit fish with green scales as they may be more camouflaged in the new vegetation. The introduction of a predator may also put brown-scaled fish at a disadvantage if they are more easily visible to the new predator, further increasing the proportion of fish with green scales.

Fish in a Local Lake Have a Mixture of Brown