Poromitra nigriceps (Zugmayer, 1911)

Family:  Melamphaidae (Bigscale fishes or ridgeheads)
Max. size:  13.53 cm SL (male/unsexed)
Environment:  bathypelagic; marine
Distribution:  Northern Atlantic Ocean, from Greenland to the Azores.
Diagnosis:  Dorsal spines (total): 3-3; Dorsal soft rays (total): 13-13; Anal spines: 1-1; Anal soft rays: 9-10; Vertebrae: 27-28. The species is distinguished by the following characters: spined posterior and lower margins of the praeoperculum, in the angular part of it is an unspined notch; insertion of the ventral fins is in front of the vertical of the posterior margin of the pectoral fin insertion; upper jaw extends beyond the vertical of the posterior eye margin; soft rays in dorsal fin 13, in anal fin 9-10; first branchial arch with 31-33 rakers; vertebrae 27-28; pyloric caeca 8 (Ref. 83719).
Biology:  Specimens were seined with non-closing fishing gear in the range of depths 3000-0 m and with bottom fishing gear is seined at 1640-2000 m (Ref. 83719).
IUCN Red List Status: Least Concern (LC); Date assessed: 09 October 2018 Ref. (130435)
Threat to humans:  harmless
Country info:  Report from Ref. 6747 (as P. crassiceps) may refer to P. nigriceps based on its distributional range (Ref. 83719).


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