Abstract: An apparatus for skinning fish comprising a supporting surface (1) for fish (13), in particular fish fillets, and a knife (10) with an active portion (11) for separation of the skin (15) and the fish meat by a mutual movement of the supporting surface (1) and the active portion (11) of the knife in relation to each other in a direction of feed, where the supporting surface (1) has a profile by which the distance between the active portion (11) of the knife and the supporting surface (1) varies accross the direction of feed. The supporting surface comprises a conveyor belt (1), and a portion of the supporting surface at the active portion (11) of the knife is constituted by the running belt (1) of the conveyor and by an adjustable support (6) arranged under the belt and having an adjustable profile accross the direction of feed.