Scopeloberyx robustus (Günther, 1887)
Longjaw bigscale
Scopeloberyx robustus
photo by Welter-Schultes, F.

 Family:  Melamphaidae (Bigscale fishes or ridgeheads)
 Max. size:  7.3 cm SL (male/unsexed)
 Environment:  bathypelagic; depth range 0 - 4740 m
 Distribution:  Circumglobal: In tropical to temperate waters; except Arctic Ocean and Mediterranean Sea. Eastern Atlantic: Gulf of Guinea and west of the Canary Islands. Eastern Pacific: California Current region (Ref. 36655). Western Pacific: Kuril Island (Ref. 52443). South China Sea (Ref.74511).
 Diagnosis:  Dorsal spines (total): 2-3; Dorsal soft rays (total): 10-13; Anal spines: 1-1; Anal soft rays: 7-9; Vertebrae: 24-24. Dark brown body; black head, mouth, and branchial cavity; pigmented fins. Transverse rows of scales, 28 (Ref. 31511). Gill rakers on the first arch, 14-17 (Ref. 37108).
 Biology:  Mesopelagic and bathypelagic at 340-1200 m depth (Ref. 36665). Oviparous, with planktonic eggs and larvae (Ref. 36655). Significant morphological variation between Indo-Pacific and other populations.
 IUCN Red List Status: Data deficient  (Ref. 96402)
 Threat to humans:  harmless
 Country info:   
 

 Entered by: Garilao, Cristina V. - 06.03.96
 Modified by: Kesner-Reyes, Kathleen - 24.06.16

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