Poromitra crassiceps, Crested bigscale

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
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Beryciformes (Sawbellies) > 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).
More on author: Günther.

Taxonomic Remarks
Distribution needs to be defined; previous reports may refer to other species of Poromitra (Ref. 83717, 83719).

Environment: milieu / climate zone / depth range / distribution range Ecology

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

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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).

Length at first maturity / Size / Weight / Age

Maturity: Lm 12.3, range 9 - 15.6 cm
Max length : 16.0 cm SL male/unsexed; (Ref. 137577); max. reported age: 9 years (Ref. 54657)

Short description Identification keys | 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).
Body shape (shape guide): fusiform / normal.

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. 130435: Version 2025-2 (Global))

  Least Concern (LC) ; Date assessed: 13 May 2013

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: of no interest
FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items (preys)
Diet composition
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Ecology
Ecology
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Max. ages / sizes
Length-weight rel.
Length-length rel.
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Maturity/Gills rel.
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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | National databases | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index
(Ref. 82804) 		PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00912 (0.00408 - 0.02036), b=3.09 (2.89 - 3.29), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level
(Ref. 69278) 		3.1   ±0.30 se; based on food items.
Generation time 10.0 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resilience
(Ref. 120179) 		Medium, minimum population doubling time 1.4 - 4.4 years (tmax=8.5).
Fishing Vulnerability
(Ref. 59153) 		High vulnerability (56 of 100). 🛈
Nutrients
(Ref. 124155) 		Calcium = 33.9 [12.3, 134.2] mg/100g; Iron = 0.4 [0.1, 1.3] mg/100g; Protein = 2.54 [0.00, 6.45] %; Omega3 = 0.253 [0.068, 0.820] g/100g; Selenium = 8.66 [2.62, 36.13] μg/100g; VitaminA = 89 [11, 829] μg/100g; Zinc = 0.838 [0.424, 1.805] mg/100g (wet weight);