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Polysteganus coeruleopunctatus (Klunzinger, 1870)

Blueskin seabream
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Native range | All suitable habitat | Point map | Year 2050
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Polysteganus coeruleopunctatus   AquaMaps   Data sources: GBIF OBIS
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Image of Polysteganus coeruleopunctatus (Blueskin seabream)
Polysteganus coeruleopunctatus
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > 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: Klunzinger.

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

Marine; reef-associated; depth range ? - 500 m (Ref. 100719). Tropical; 31°N - 28°S

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

Western Indian Ocean aand East Africa: including the Red Sea and probably Kenya.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm TL male/unsexed; (Ref. 3198); common length : 35.0 cm TL male/unsexed; (Ref. 30573)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 12; Dorsal soft rays (total): 10; Anal spines: 3; Anal soft rays: 8. This species is distinguished from its congeners by the following set of characters: scale rows above lateral line 6½; scales rows between 5th dorsal-fin spine base and lateral-line scale 5½ or 6½; pored lateral-line scales 51 or 52; suborbital depth subequal to or greater than the orbit diameter; dorsal-fin rays are reddish pink as well as similar reddish pink on upper margin dorsal-fin ray (no clear yellow or faint yellowish); body with 7 or 8 faint irregular blue spotted lines, not visible from all angles; reddish membranes on caudal-fin lobes and caudal fin with clear white lowest margin of lower caudal fin lobe; without blue iridescence on each scale of dorsal and lateral sides of whitish pink body; canines are large, both upper and lower canines on both jaws usually visible even when mouth closed; body deep 44-46% (mean 44%) of SL; anal- and pelvic- fin rays are whitish or reddish hyaline; no yellow (white) rear margin of branchiostegal rays and membrane; weak bony bulge present before and above eye, forming a low median ridge in larger specimens of over 30 cm SL; caudal fin is moderately forked (Ref. 106993).

Biology     Glossary (e.g. epibenthic)

Occurs mainly in deep waters around reefs (Ref. 30573). Carnivorous predator (Ref. 30573). Sold fresh in markets.

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Bauchot, M.-L. and M.M. Smith, 1984. Sparidae. In W. Fischer and G. Bianchi (eds.) FAO species identification sheets for fishery purposes. Western Indian Ocean (Fishing Area 51). volume 4. [var. pag.] FAO, Rome. (Ref. 3507)

IUCN Red List Status (Ref. 130435)

  Data deficient (DD) ; Date assessed: 02 December 2009


Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans


Human uses

Fisheries: commercial
FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet compositions
Food consumptions
Food rations
Population dynamics
Max. ages / sizes
Length-weight rel.
Length-length rel.
Mass conversions
Life cycle
Spawning aggregations
Egg developments
Larval dynamics
FAO areas
BRUVS - Videos
Gill areas
Body compositions
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Fish sounds
Diseases / Parasites
Toxicities (LC50s)
Human related
Aquaculture systems
Aquaculture profiles
Ciguatera cases
Stamps, coins, misc.


Special reports

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Internet sources

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

Estimates based on models

Preferred temperature (Ref. 123201): 14.2 - 24.7, mean 20.5 °C (based on 105 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01259 (0.00609 - 0.02604), b=3.04 (2.87 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.1   ±0.7 se; based on size and trophs of closest relatives
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (44 of 100).
Price category (Ref. 80766):   Very high.