Polysteganus praeorbitalis, Scotsman seabream : fisheries

Polysteganus praeorbitalis (Günther, 1859)

Scotsman seabream
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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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Classification / Names Populärnamn | synonymer | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (strålfeniga fiskar) > Perciformes (Perch-likes) > 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 Ekologi

; marina revassocierade; djupintervall 20 - 100 m (Ref. 3198).   Subtropical; 17°S - 28°S

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

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

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 90.0 cm TL hane/ej könsbestämd; (Ref. 3198); common length : 35.0 cm TL hane/ej könsbestämd; (Ref. 3507); publicerad maxvikt: 7.8 kg (Ref. 40637)

Short description Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt): 12; Mjukstrålar i ryggfenan (totalt): 10; Taggstrålar i analfenan 3; Mjukstrålar i analfenan: 8. Small eye, deep preorbital, steep forehead (Ref. 3198).

Biologi     Ordlista (t.ex. 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 Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

Main reference Upload your references | referenser | Koordinator | Medarbetare

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. 120744)

  Sårbar, se IUCNs rödlista (VU) (A2bd); Date assessed: 02 December 2008

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fiskeri: kommersiell
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. 82805):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01820 (0.00989 - 0.03347), b=3.02 (2.87 - 3.17), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trofisk nivå (Ref. 69278):  4.5   ±0.80 se; Based on food items.
Resiliens (Ref. 120179):  Mycket låg, lägsta populationsfördubblingstid mer än 14 år (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  High vulnerability (65 of 100) .
Price category (Ref. 80766):   Very high.