Gymnocrotaphus curvidens, Janbruin : fisheries

Gymnocrotaphus curvidens Günther, 1859

Janbruin
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Gymnocrotaphus curvidens   AquaMaps   Data sources: GBIF OBIS
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Image of Gymnocrotaphus curvidens (Janbruin)
Gymnocrotaphus curvidens
Picture by King, D.R.

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: Gymnocrotaphus: Greek, gymnos = naked + Greek, krotaphos = front, head (Ref. 45335).
More on author: Günther.

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

Marine; demersal; depth range 1 - 80 m (Ref. 3198). Subtropical

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

Southeast Atlantic: endemic to South Africa, from the Cape to Durban.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 50.0 cm TL male/unsexed; (Ref. 3198)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 10; Dorsal soft rays (total): 11 - 12; Anal spines: 3; Anal soft rays: 9 - 10. Eyes deep blue; the brown of live specimens fades quickly, leaving orange lines along the scale rows; sometimes with narrow dark crossbars (Ref. 3198).
Body shape (shape guide): fusiform / normal.

Biology     Glossary (e.g. epibenthic)

Occurs mostly in shallow rocky areas, but also found down to 80 m. Flesh excellent.

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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: Version 2025-2 (Global))

  Least Concern (LC) ; Date assessed: 01 December 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: commercial
FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items (preys)
Diet composition
Food consumption
Food rations
Predators
Ecology
Ecology
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
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Maturity
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 | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | Public aquariums | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index
(Ref. 82804) 		PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.01259 (0.00609 - 0.02604), b=3.03 (2.86 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level
(Ref. 69278) 		3.4   ±0.5 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 to high vulnerability (53 of 100). 🛈
Price category
(Ref. 80766) 		Very high.
Nutrients
(Ref. 124155) 		Calcium = 75.9 [42.9, 144.0] mg/100g; Iron = 1.06 [0.60, 1.87] mg/100g; Protein = 19.6 [18.8, 20.5] %; Omega3 = 0.365 [0.256, 0.552] g/100g; Selenium = 24.8 [12.4, 46.9] μg/100g; VitaminA = 12.6 [3.8, 35.9] μg/100g; Zinc = 0.74 [0.53, 1.04] mg/100g (wet weight);