PROBLEM TO BE SOLVED: To provide a frozen fish with skin whose characteristic derived from the fish is not damaged, and even when it is heated for cooking it, warping due to heating is not generated, and a production method for easily producing the frozen fish with skin at low cost.SOLUTION: Organic acid solutions 2-1, 2-2 are brought into contact with a skin 4 of a raw material 1 of a fish with skin or of a raw material 5 of a processed fish with skin, for acid treatment without damaging characteristic of a lower part of the skin 4, then the raw material of fish is frozen, and sliced into thin-sliced pieces if necessary, thereby the frozen fish with skin in which warping due to heating is not generated, is provided.COPYRIGHT: (C)2016,JPO&INPIT【課題】魚本来の特性が損なわれていない凍結皮付き魚であって、調理するなどのために加熱しても、加熱による反りが発生しない凍結皮付き魚および凍結皮付き魚を経済的に容易に製造できる製造方法の提供。【解決手段】皮付き魚原料1あるいは加工して得られる皮付き加工魚原料5の表皮4面に所定酸度の有機酸溶液2-1、2-2を接触させ、前記表皮4の下部の特性を損なうことなく酸処理した後、凍結し、必要に応じて切り身加工して得られる、加熱による反りが発生しない凍結皮付き魚。【選択図】図1