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Polysteganus praeorbitalis (Günther, 1859)

Scotsman seabream
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Native range | All suitable habitat | Point map | Year 2050
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Polysteganus praeorbitalis   AquaMaps   Data sources: GBIF OBIS
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Image of Polysteganus praeorbitalis (Scotsman seabream)
Polysteganus praeorbitalis
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South Africa country information

Common names: Scotsman, Skotsman
Occurrence: native
Salinity: marine
Abundance: occasional (usually not seen) | Ref: van der Elst, R.P. and F. Adkin (eds.), 1991
Importance: commercial | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from Durban northwards; southward reaching Algoa Bay (Ref. 3507). Status of stock critical/severely depleted; once a major component of lineboat catch (Ref. 4332). Rarely caught by shore anglers. Also Ref. 12484.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/sf.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Smith, J.L.B. and M.M. Smith, 1986
National Database:

Common names from other countries

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

> Eupercaria/misc (Various families in series Eupercaria) > Sparidae (Porgies)
Etymology: Polysteganus: Greek, polys = a lot of + Greek, stego, stege = covered (Ref. 45335).
  More on author: Günther.

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

marino asociado a arrecife; rango de profundidad 20 - 100 m (Ref. 3198).   Subtropical; 17°S - 28°S

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Western Indian Ocean: known only from Beira, Mozambique to Algoa Bay, South Africa.

Tamaño / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 90.0 cm TL macho / no sexado; (Ref. 3198); common length : 35.0 cm TL macho / no sexado; (Ref. 3507); peso máximo publicado: 7.8 kg (Ref. 40637)

Short description Claves de identificación | Morfología | Morfometría

Espinas dorsales (total) : 12; Radios blandos dorsales (total) : 10; Espinas anales: 3; Radios blandos anales: 8. Small eye, deep preorbital, steep forehead (Ref. 3198).

Biología     Glosario (por ej. epibenthic)

Occurs in deep offshore reefs ranging from 20 to 100 m. Feeds on large crabs, crayfish, a variety of reef fish and squid. Spawns in winter. Sold fresh (Ref. 3507).

Life cycle and mating behavior Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva

Main reference Upload your references | Referencias | Coordinador | Colaboradores

Smith, J.L.B. and M.M. Smith, 1986. Sparidae. p. 580-594. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 3198)

IUCN Red List Status (Ref. 130435)

  Vulnerable, ver lista roja de la UICN (VU) (A2bd); Date assessed: 02 December 2008

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

Pesquerías: comercial
FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 23.5 - 26.3, mean 25.3 (based on 11 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01778 (0.00963 - 0.03285), b=3.03 (2.88 - 3.18), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Nivel trófico (Ref. 69278):  4.5   ±0.80 se; based on food items.
Resiliencia (Ref. 120179):  Muy bajo, población duplicada en un tiempo mínimo superior a 14 años (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  High vulnerability (56 of 100).
Price category (Ref. 80766):   Very high.