Akamutsu and Nodoguro Premium White Fish

Sea of Japan coast; primary markets Kanazawa (Ishikawa), Niigata, Kyoto's Nishiki via San-in coast suppliers

Akamutsu (赤むつ), commonly called nodoguro (ノドグロ, 'black throat') for the jet-black interior of its mouth, is Sebastes thompsoni — a deepwater rockfish prized as one of Japan's most luxurious white-fleshed fish. Found at 100–200 m depth along the Sea of Japan coast from Kyushu to Niigata, it is particularly celebrated in Kanazawa and the Noto Peninsula, where high fat content from cold deep waters rivals premium tuna in its marbled richness. The skin is striking coral-scarlet; the flesh, once cooked, breaks into large translucent-white flakes that release extraordinary quantities of natural fat. Unlike lean white fish such as hirame or shiromi, akamutsu carries fat marbled through the muscle tissue, yielding a basted, almost self-unctuous quality under heat. In Kanazawa's culinary identity it occupies a place comparable to what toro holds for Tokyo sushi bars. Preparation exploits this fat: shioyaki (salt grill) is canonical — the skin blisters and renders, the fat bastes the flesh from within, and a final push of high heat caramelises the skin into crackling. Nitsuke (soy-mirin braise) coaxes collagen from the head and collar into a glossy sauce. Aburi (flame-sear) over nigiri concentrates sweetness. Sashimi is prized immediately post-slaughter when the flesh is firm yet already rich; the texture shifts toward melting silk within a day. Seasonal peak is autumn into winter when fat reserves peak before cold-season dormancy. Whole fish pricing at Kanazawa's Omicho market fluctuates significantly with catch, sometimes exceeding 10,000 yen per kilogram.

Rich, buttery, almost unctuous fat-marbled white flesh; skin caramelises to sweet-savoury crackle under heat; flavour is sweet oceanic richness rather than the clean neutrality of leaner white fish