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Hoplostethus atlanticus  Collett, 1889

Orange roughy
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Hoplostethus atlanticus
Picture by Orlov, A.

Classification / Names Noms communs | Synonymes | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinoptérygiens (poissons à nageoires rayonnées) > Beryciformes (Sawbellies) > Trachichthyidae (Slimeheads)
Etymology: Hoplostethus: Greek, hoplon = weapon + Greek, stetho, stethion = brest; literal = to prick a little breast (Ref. 45335).

Environnement / Climat / Gamme Écologie

; marin bathypélagique; océanodrome (Ref. 51243); profondeur 180 - 1809 m (Ref. 6390), usually 400 - 900 m (Ref. 3583).   Deep-water; 3°C - 9°C (Ref. 36694); 65°N - 56°S, 84°W - 168°W

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Western Atlantic: Gulf of Maine (Ref. 4784) [in error according to Moore (Fishes of the Gulf of Maine, in press), should be off northern Nova Scotia]. Eastern Atlantic: Iceland to Morocco; Walvis Bay, Namibia to off Durban, South Africa. Indo-Pacific: south-central Indian Ocean and New Zealand. Eastern Pacific: Chile (Ref. 27363). Several stocks may exist as suggested by distinct spawning sites and seasons.

Length at first maturity / Taille / Poids / Âge

Maturity: Lm 37.0, range 18 - 32.5 cm
Max length : 75.0 cm TL mâle / non sexé; (Ref. 36696); common length : 40.0 cm TL mâle / non sexé; (Ref. 4181); poids max. publié: 7.0 kg (Ref. 36697); âge max. reporté: 149 années (Ref. 3680)

Description synthétique Morphologie | Morphométrie

Épines dorsales (Total): 4 - 6; Rayons mous dorsaux (Total): 15-19; Épines anales 3; Rayons mous anaux: 10 - 12. Bright brick-red in color, mouth and gill cavity bluish black (Ref. 4181). Ventral scutes: 19-25.

Biologie     Glossaire (ex. epibenthic)

Inhabits deep, cold waters over steep continental slopes, ocean ridges and sea-mounts. Shallow range of usual occurrence from Ref. 27121. Appears to be dispersed over both rough bottoms and steep, rough grounds where it feeds on crustaceans and fish. In New Zealand, the main prey include mesopelagic and benthopelagic prawns, fish, and squid, with other organisms such as mysids, amphipods and euphausiids occasionally being important (Ref. 9072). Juveniles feed mainly on crustaceans (Ref. 27075, 27076). Grows very slowly and is one of the longest lived fish species known. Based on parasite and trace-element analyses, orange roughy is a sedentary species with little movement between fish-management zones (Ref. 27089). Little is known of the larvae and juveniles which are probably confined to deep water (Ref. 27088). The fishery targets sporadically formed dense spawning and non-spawning aggregations. Marketed fresh and frozen; eaten steamed, fried, microwaved and baked (Ref. 9988). Because of severe overfishing the species has been listed as threatened by the Australian Government in 2006.

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Orange roughy are synchronous annual spawners (Ref. 7030). They form dense spawning aggregations over sea hills and slopes. Eggs and sperms are shed into the water at the same time. Individual males appear to spawn over a 1-2 week period and females spawn for up to 1 week. Little is known of the larvae and juveniles.

Référence principale Upload your references | Références | Coordinateur : Moore, Jon A. | Collaborateurs

Maul, G.E., 1986. Trachichthyidae. p. 749-752. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese (eds.) Fishes of the north-eastern Atlantic and the Mediterranean. UNESCO, Paris. Vol. 2. (Ref. 4784)

Statut dans la liste rouge de l'IUCN (Ref. 115185)

  Non évalué 

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless




Utilisations par l'homme

Pêcheries: hautement commercial
FAO(pêcheries: production, Résumé espèce; publication : search) | FIRMS (Stock assessments) | FishSource | Sea Around Us

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Estimates of some properties based on models

Preferred temperature (Ref. 115969): 3.5 - 8.4, mean 6.6 (based on 754 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02239 (0.01592 - 0.03149), b=3.08 (2.98 - 3.18), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Niveau trophique (Ref. 69278):  4.3   ±0.1 se; Based on diet studies.
Résilience (Ref. 69278):  Très faible, temps minimum de doublement de population supérieur à 14 ans (K=0.04-0.06; tm=5-33; tmax=140; Fec=10,000).
Prior r = 0.2, 2 SD range = 0.05 - 0.80, log(r) = -1.61, SD log(r) = 0.7, Based on: 4 K, 13 tgen, 1 tmax, 20 Fec records
Vulnérabilité (Ref. 59153):  High to very high vulnerability (73 of 100) .
Catégorie de prix (Ref. 80766):   Medium.