Graded Incorporation of Defatted Yellow Mealworm () in Rainbow Trout () Diet Improves Growth Performance and Nutrient Retention.

Insects are emerging as a sustainable alternative to fishmeal and fish oil in aquafeeds. This study assessed the effect of graded incorporation levels of defatted yellow mealworm () protein meal on juvenile rainbow trout () growth performance, body composition, and apparent nutrient digestibility. The trial comprised five dietary treatments: control diet with 25% fishmeal, and four experimental diets with yellow mealworm protein meal at 5%, 7.