This study assessed the impact of different start-feeding regimes on lumpfish ( Cyclopterus lumpus ) larvae until 35 days post-hatch. Diets included enriched Artemia nauplii, cryopreserved cirriped nauplii ( Semibalanus balanoides ), cultivated copepodites ( Acartia tonsa ), formulated feed, and combinations thereof. Enriched Artemia yielded the best outcomes—fast early growth, with the largest larvae, most normal ossification...