Deep-sea sole (Microstomus bathybius), first described by Gilbert, 1890 is a large fish in the family Pleuronectidae (order Pleuronectiformes). Adults typically reach 47.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 41 to 1800 metres. It occurs in Deep-water waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Least Concern.The species is valued as a game and sport species.
Dorsal spines (total): 0; Dorsal soft rays (total): 109 - 117; Anal spines: 0; Anal soft rays: 95 - 98. Dorsal origin over posterior edge of pupil. Caudal imperfectly rounded. Pectorals short.: short and / or deep.
Behavioural data for Deep-sea sole is currently being reviewed.
Marine; bathydemersal; depth range 41 - 1800 m , usually 500 - 950 m . Deep-water; 68°N - 25°N, 140°E - 111°W North Pacific: Japan to the Gulf of Alaska and to Mexican border.
Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.
⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.
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