Rexea solandri, Silver gemfish : fisheries

Rexea solandri (Cuvier, 1832)

Silver gemfish
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Rexea solandri   AquaMaps   Data sources: GBIF OBIS
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Rexea solandri
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Classification / Noms Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Scombriformes (Mackerels) > Gempylidae (Snake mackerels)
Etymology: Rexea: Latin, rex, rego = king.
Eponymy: Daniel Carl [Karl] Solander (1733–1782) was a Swedish naturalist and explorer who was one of Linnaeus’s pupils at Uppsala. [...] (Ref. 128868), visit book page.
More on author: Cuvier.

Environnement : milieu / zone climatique / profondeur / gamme de distribution Écologie

marin benthopélagique; océanodrome (Ref. 51243); profondeur 100 - 800 m (Ref. 6181), usually 300 - 450 m (Ref. 28786). Deep-water; 25°S - 48°S, 109°E - 173°W (Ref. 6181)

Distribution Territoires | Zones FAO | Écosystèmes | Occurrences | Carte par point | Introductions | Faunafri

Southwest Pacific: off southern, southwestern and southeastern Australia, Tasmania and New Zealand. Occurrence records from Madagascar and Japan need to be verified.

Longueur à la première maturité / Taille / Poids / Âge

Maturité: Lm 65.0, range 60 - 70 cm
Max length : 110 cm SL mâle / non sexé; (Ref. 6181); poids max. publié: 16.0 kg (Ref. 28838); âge max. reporté: 16 années (Ref. 28789)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 18 - 19; Rayons mous dorsaux (Total) : 16 - 19; Épines anales: 2; Rayons mous anaux: 13 - 16; Vertèbres: 36. Body entirely scaled at over 25 cm SL. Lateral line branching below the 5th to the 6th spine of the first dorsal fin. The upper branch reaches beyond the origin of the second dorsal fin, usually ending between the 8th to the 12th soft ray. The lower branch runs mid laterally, undulating above the anal-fin base. Body is bluish above, silvery below, a black blotch distally on two anterior membranes of the first dorsal fin, the rest of the fin is grayish.
Body shape (shape guide): elongated; Cross section: compressed.

Biologie     Glossaire (ex. epibenthic)

Found in schools on continental shelf and slope. They are normally caught close to the sea bed but probably move into midwater at times (Ref. 28786). Juveniles are pelagic, adults also occur near the surface off Tasmania and New Zealand. Dense schools of pre-spawners migrate along the continental slope at about 400 m during winter (Ref. 9563). Feed on fish, squid and crustaceans. The flesh is of good edible quality and especially tasty when smoked. In Australia, the eastern gemfish stock has been subjected to a prolonged period of poor recruitment which started in 1989 (Ref. 28843, 28786). This event resulted in a very significant decline in the gemfish resource. In Australia, efforts are now being channeled towards the recovery of the fishery.

Cycle de vie et comportement reproducteur Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Larvae are caught in inshore waters which may indicate that gemfish move onto the shelf to spawn, or currents carry larvae in from offshore spawning grounds (Ref. 28786).

Référence principale Téléchargez vos références | Références | Coordinateur : Parin, Nikolay V. | Collaborateurs

Nakamura, I. and N.V. Parin, 1993. FAO Species Catalogue. Vol. 15. Snake mackerels and cutlassfishes of the world (families Gempylidae and Trichiuridae). An annotated and illustrated catalogue of the snake mackerels, snoeks, escolars, gemfishes, sackfishes, domine, oilfish, cutlassfishes,. scabbardfishes, hairtails, and frostfishes known to date. FAO Fish. Synop. 125(15):136 p. (Ref. 6181)

Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: commercial
FAO - pêcheries: landings search; Publication: search | FIRMS - Stock assessments | FishSource | Sea Around Us

Plus d'informations

Écologie trophique
Aliments (proies)
Composition du régime alimentaire
Consommation alimentaire
Rations alimentaires
Prédateurs
Écologie
Écologie
Dynamique des populations
Paramètres de croissance
Âges / tailles maximales
Longueur-poids rel.
Rel. longueur-longueur.
Fréquences de longueurs
Conversion de masse
Recrutement
Abondance
Cycle de vie
Reproduction
Maturité
Maturité/épines rel.
Fécondité
Frai
Agrégats de frai
Œufs
Développement de l'œuf
Larves
Dynamique des populations larvaires
Distribution
Territoires
Zones FAO
Écosystèmes
Occurrences
Introductions
BRUVS - Vidéos
Anatomie
Surface branchiale
Cerveau
Otolithe
Physiologie
Composition corporelle
Nutriments
Consommation d'oxygène
Type de natation
Vitesse de nage
Pigments visuels
Son de poisson
Maladies et parasites
Toxicité (CL50)
Génétique
génôme
Génétique
Hétérozygotie
Héritabilité
Diversité génétique
Liées à l'homme
Systèmes d'aquaculture
Profils d'aquaculture
Souches
Cas de ciguatera
Timbres, pièces de monnaie, divers
Sensibilisation
Collaborateurs
Références
Références

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Sources Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - pêcheries: landings search; Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoological Record

Estimations basées sur des modèles

Indice de diversité phylogénétique
(Réf. 82804)
PD50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00339 (0.00188 - 0.00609), b=3.14 (2.98 - 3.30), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Niveau trophique
(Réf. 69278)
4.3   ±0.66 se; based on food items.
Generation time 5.4 (4.5 - 6.6) years. Estimated as median ln(3)/K based on 14 growth studies.
Résilience
(Réf. 120179)
Faible, temps minimum de doublement de population : 4,5 à 14 années (K=0.11-0.21; tm=3-6; tmax=16; Fec=500,000).
Rate of population increase Prior r = 0.43, 95% CL = 0.28 - 0.64, Based on 2 full stock assessments.
Vulnérabilité de la pêche
(Ref. 59153)
High vulnerability (58 of 100). 🛈
Vulnérabilité climatique
(Ref. 125649)
High to very high vulnerability (65 of 100). 🛈
Catégorie de prix
(Ref. 80766)
Very high.
Nutriments
(Ref. 124155)
Calcium = 11 [4, 29] mg/100g; Iron = 0.306 [0.113, 0.902] mg/100g; Protein = 15.6 [13.2, 18.3] %; Omega3 = 0.228 [0.114, 0.465] g/100g; Selenium = 25.8 [10.5, 61.4] μg/100g; VitaminA = 15.4 [3.4, 72.8] μg/100g; Zinc = 0.291 [0.195, 0.444] mg/100g (wet weight); based on nutrient studies.