Muscle growth and changes in chemical composition of spotted wolffish juveniles (Anarhichas minor) fed diets with and without microalgae (Scenedesmus obliquus)

•Fast muscle growth dynamics, changes in chemical composition as well as capacity to utilize diets with or without the microalgae Scenedesmus obliquus incorporated was investigated.•The present results suggest that microalgae may stimulate muscle fiber recruitment in fish, which could contribute to better growth performance over time.•Dietary algae inclusion also affected muscle mineral content and skin pigmentation of spotted wolffish.