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> 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.

Issue
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 Ekologi

marina batypelagisk; djupintervall 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 / Vikt / Age

Maturity: L_m 12.3, range 9 - 15.6 cm
Max length : 14.8 cm SL hane/ej könsbestämd; (Ref. 54657); rapporterad maxålder: 9 år (Ref. 54657)

Short description Bestämningsnycklar | Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt) : 3; Mjukstrålar i ryggfenan (totalt) : 12 - 13; Taggstrålar i analfenan: 1; Mjukstrålar i analfenan: 9 - 10; Ryggkotor: 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).

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

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

Oviparous (Ref. 36655).

Main reference Upload your references | referenser | Koordinator | Medarbetare

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 2024-1)

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

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fiskeri: saknar intresse

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Ytterligare information

Trophic ecology
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Estimates based on models

Preferred temperature (Ref. 123201): 1.7 - 6.3, mean 3.2 °C (based on 2535 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00912 (0.00407 - 0.02046), b=3.09 (2.89 - 3.29), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Trofisk nivå (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.

Resiliens (Ref. 120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (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);

Poromitra crassiceps (Günther, 1878)