Sebastes diploproa (Gilbert, 1890)
Splitnose rockfish
photo by Archipelago Marine Research Ltd.

Family:  Sebastidae (Rockfishes, rockcods and thornyheads), subfamily: Sebastinae
Max. size:  46 cm TL (male/unsexed); max.weight: 810.0 g; max. reported age: 86 years
Environment:  bathydemersal; depth range 0 - 800 m
Distribution:  Northeast Pacific: Alaska Peninsula to Cedros Island, Baja California and the Gulf of California in Mexico.
Diagnosis:  Dorsal spines (total): 13-13; Dorsal soft rays (total): 11-14; Anal spines: 3-3; Anal soft rays: 5-8; Vertebrae: 26-26. Head spines strong - nasal, preocular, postocular, tympanic and parietal spines present, supraocular, coronal and nuchal spines absent (Ref. 27437). Toothed knob in front of each upper jaw, deep notch between jaws (Ref. 27437). Caudal fin moderately indented (Ref. 6885). A red rockfish, silver ventrally (Ref. 27437). Branchiostegal rays: 7 (Ref. 36715).
Biology:  Common offshore, on soft bottoms (Ref. 2850). Young occur in shallow water, often at surface under drifting kelp (Ref. 2850). Viviparous, with planktonic larvae and pelagic juveniles (Ref. 36715, 34817). The biggest individuals are sometimes found in markets where the flesh is sold as rockfish fillet (Ref. 27436). Rarely caught by anglers (Ref. 27436).)
IUCN Red List Status: Not Evaluated (N.E.) Ref. (120744)
Threat to humans:  harmless
Country info:   

Entered by: Froese, Rainer - 01.05.91
Modified by: Luna, Susan M. - 20.09.06
Checked by: Garilao, Cristina V. - 09.09.96

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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