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Hoplostethus atlanticus  Collett, 1889

Orange roughy
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| Native range | All suitable habitat | PointMap | Year 2100 |
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Hoplostethus atlanticus   AquaMaps   Data sources: GBIF OBIS
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Image of Hoplostethus atlanticus (Orange roughy)
Hoplostethus atlanticus
Picture by Orlov, A.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Beryciformes (Sawbellies) > Trachichthyidae (Slimeheads)
Etymology: Hoplostethus: Greek, hoplon = weapon + Greek, stetho, stethion = brest; literal = to prick a little breast (Ref. 45335).

Environment / Climate / Range Ecology

Marine; bathypelagic; oceanodromous (Ref. 51243); depth range 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

Length at first maturity / Size / Weight / Age

Maturity: Lm 37.0, range 18 - 32.5 cm
Max length : 75.0 cm TL male/unsexed; (Ref. 36696); common length : 40.0 cm TL male/unsexed; (Ref. 4181); max. published weight: 7.0 kg (Ref. 36697); max. reported age: 149 years (Ref. 3680)

Short description Morphology | Morphometrics

Dorsal spines (total): 4 - 6; Dorsal soft rays (total): 15-19; Anal spines: 3; Anal soft rays: 10 - 12. Bright brick-red in color, mouth and gill cavity bluish black (Ref. 4181). Ventral scutes: 19-25.

Distribution Countries | FAO areas | Ecosystems | 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.

Biology     Glossary (e.g. 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.

Main reference Upload your references | References | Coordinator : Moore, Jon A. | Collaborators

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.

IUCN Red List Status (Ref. 90363)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: highly commercial
FAO(fisheries: production, species profile; publication : search) | FIRMS (Stock assessments) | FisheriesWiki | Sea Around Us

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Internet sources

BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | National databases | PubMed | RFE Identification | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02690 (0.01503 - 0.04815), b=3.05 (2.88 - 3.22), based on LWR estimates for species & Subfamily-BS (Ref. 93245).
Trophic Level (Ref. 69278):  4.3   ±0.6 se; Based on diet studies.
Resilience (Ref. 69278):  Very Low, minimum population doubling time more than 14 years (K=0.04-0.06; tm=5-33; tmax=140; Fec=10,000).
Vulnerability (Ref. 59153):  High to very high vulnerability (73 of 100) .
Price category (Ref. 80766):   Medium.