Trout Facts

July 13, 2023

Question: How do trout camouflage themselves from predators?

Answer: When trout first hatch, their bodies have a transparent appearance which reduces visibility to predators. As trout continue to develop, pigmented skin cells called chromatophores help form spotted patterns which allow the fish to camouflage themselves in their natural habitat. Some of these cells have reflective qualities which lighten or darken to help them blend in with their surroundings.

Countershading is another camouflage adaptation that helps reduce predation. Trout have darker, spotted backs to blend in with the substrate and avoid predators from above. Lighter undersides help them avoid predators from beneath by blending in with the light from above.

For more fun fish facts, visit CDFW’s Classroom Aquarium Education Program webpage ( https://wildlife.ca.gov/CAEP/Overview ).