What best explains the fact that most fish have a relatively light colored belly and a relatively dark-colored top or back?

Question

Quizplus · Accepted Answer

A light-colored belly helps fish blend in with the bright surface water when viewed from below, making them less noticeable to predators. A dark-colored top or back helps fish blend in with the darker water or sea floor when viewed from above, providing better camouflage. This adaptation is essential for survival in the open ocean or shallow waters where predators are abundant.

What Best Explains the Fact That Most Fish Have a Relatively