Poromitra crassiceps (Günther, 1878)
Crested bigscale
photo by SFSA

Family:  Melamphaidae (Bigscale fishes or ridgeheads)
Max. size:  14.8 cm SL (male/unsexed); max. reported age: 9 years
Environment:  bathypelagic; marine; depth range 164 - 2730 m
Distribution:  Distribution needs to be defined. Formerly assigned as senior synonym of eight nominal species: P. atlantica, P. coronata, P. cristiceps, P. frontosa, P. nigriceps, P. nigrofulva, P. rugosa, P. unicornis (Ref. 83717).
Diagnosis:  Dorsal spines (total): 3-3; Dorsal soft rays (total): 12-13; Anal spines: 1-1; Anal soft rays: 9-10; Vertebrae: 27-29. This species is distinguished by the following characters: spinulated (without gap) posterior and lower edges of praeoperculum; insertion of ventral fins behind the vertical of posterior edge of pectoral fin insertion; upper jaw extends beyond the vertical of posterior eye edge; soft rays in dorsal fin 12-13, in anal fin 9-10; rakers at first gill arch 28-30; vertebrae 27-29; pyloric caeca 6 (Ref. 83717).
Biology:  Oviparous, with planktonic eggs and larvae (Ref. 36655). There is significant morphological variation between populations (Ref. 4241).
IUCN Red List Status: Least Concern (LC); Date assessed: 13 May 2013 Ref. (130435)
Threat to humans:  harmless


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