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Poromitra crassiceps  (Günther, 1878)

Crested bigscale
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Poromitra crassiceps   AquaMaps   Data sources: GBIF OBIS
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Image of Poromitra crassiceps (Crested bigscale)
Poromitra crassiceps
Picture by SFSA

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Stephanoberyciformes (Pricklefishes, bigscales and gibberfishes) > Melamphaidae (Bigscale fishes or ridgeheads)
Etymology: Poromitra: Greek, poros = porous + Greek, mitra = stripe, belt (Ref. 45335);  crassiceps: Named crassiceps for its thick head (Ref. 6885).

Environment / Climate / Range Ecology

Marine; bathypelagic; depth range 164 - 2730 m (Ref. 83717), usually 750 - 2730 m (Ref. 83717).   Tropical

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 9 - 15.6 cm
Max length : 14.8 cm SL male/unsexed; (Ref. 54657); max. reported age: 9 years (Ref. 54657)

Short description Morphology | Morphometrics

Dorsal spines (total): 3; Dorsal soft rays (total): 12-13; Anal spines: 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).

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Tropical Atlantic Ocean: 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).

Biology     Glossary (e.g. epibenthic)

Oviparous, with planktonic eggs and larvae (Ref. 36655). There is significant morphological variation between populations (Ref. 4241).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Oviparous (Ref. 36655).

Main reference Upload your references | References | Coordinator | Collaborators

Kotlyar, A.N., 2008. Revision of the genus Poromitra (Melamphaidae): Part 1. Species of group P. crassiceps. J. Ichthyol. 48(7):479-492. (Ref. 83717)

IUCN Red List Status (Ref. 96402)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: of no interest
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Internet sources

BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | National databases | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00382 - 0.02615), b=3.04 (2.81 - 3.27), based on LWR estimates for this (Sub)Family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.1   ±0.30 se; Based on food items.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (tmax=8.5).
Vulnerability (Ref. 59153):  Moderate to high vulnerability (54 of 100) .