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Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Euteleosteomorpha
Subcohors: Neoteleostei
Infracohors: Eurypterygia
Sectio: Ctenosquamata
Subsectio: Acanthomorphata
Divisio/Superordo: Acanthopterygii
Ordo: Scorpaeniformes
Subordo: Scorpaenoidei

Familia: Sebastidae
Subfamilia: Sebastinae
Genus: Helicolenus
Species: H. alporti – H. avius – H. barathri – H. dactylopterus – H. fedorovi – H. hilgendorfii – H. lahillei – H. lengerichi – H. mouchezi – H. percoides

Helicolenus Goode & Bean, 1896

Gender: masculine
Type species: Scorpaena dactyloptera Delaroche, 1809
Type by original designation


Goode, G.B. & Bean, T.H. 1896: Oceanic ichthyology, a treatise on the deep-sea and pelagic fishes of the world, based chiefly upon the collections made by the steamers Blake, Albatross, and Fish Hawk in the northwestern Atlantic, with an atlas containing 417 figures. Special Bulletin U. S. National Museum 2: Text: i-xxxv + 1-26 + 1-553, Atlas: i-xxiii, 1-26, 123 pls. BHL

Vernacular names
日本語: ユメカサゴ属

Helicolenus – Taxon details on Integrated Taxonomic Information System (ITIS).
Helicolenus in the World Register of Marine Species
Helicolenus species list in FishBase,
Froese, R. & Pauly, D. (eds.) 2023. FishBase. World Wide Web electronic publication,, version 02/2023.
Helicolenus and its species (including synonyms) in Catalog of Fishes, Eschmeyer, W.N., Fricke, R. & van der Laan, R. (eds.) 2023. Catalog of Fishes electronic version.

Helicolenus is a genus of marine ray-finned fishes belonging to the family Scorpaenidae where they are classified within the subfamily Sebastinae, the rockfishes. The species in this genus are found in the Indian, Atlantic and Pacific oceans.

Helicolenus was described by a genus in 1896 by the American ichthyologists George Brown Goode & Tarleton Hoffman Bean using Scorpaena dactyloptera as its type species which had originally been described by the Genevan physician, naturalist, chemist, botanist and ichthyologist François Étienne Delaroche in 1809.[1] The genus name is a compound of helikos which means "twisted" or "curved" but meaning "strong" according to Goode and Bean, possibly in error for hadros; and oleni meaning "elbow" or "arm", an allusion to the “strong pectoral fins” of H. dactylopterus.[2]

There are 9 recognised species:[3]

Helicolenus avius T. Abe & Eschmeyer, 1972
Helicolenus barathri (Hector, 1875) (bigeye sea perch, Offshore ocean perch, bigeye ocean perch)
Helicolenus dactylopterus (Delaroche, 1809) (blackbelly rosefish)
Helicolenus fedorovi Barsukov, 1973
Helicolenus hilgendorfii (Döderlein (de), 1884) (Hilgendorf's saucord)
Helicolenus lahillei Norman, 1937
Helicolenus lengerichi Norman, 1937
Helicolenus mouchezi (Sauvage, 1875)
Helicolenus percoides (J. Richardson & Solander, 1842) (red gurnard perch, Inshore ocean perch, reef ocean perch, jock stewart)


Helicolenus fishes have a large head which bears spiny ridges and has a large mouth. There are 5 spines on the posterior and lower margin of the preoperculum and two obvious spines close to the posterior of the operculum. Their dorsal fins have 11-13 robust spines and 10 to 14 soft rays.[4][5] Species in this genius vary in length from a standard length of 27 cm (11 in) in H. fedorovi and H. hilgendorfii up to a total length of 50 cm (20 in) in H. dactylopterus.[3]
Distribution and habitat

Helicolenus rockfishes are found in the Pacific and Atlantic oceans. They are benthic, demersal and bathydemersal fishes.[3]

Helicolenus rockfishes are ovoviviparous and fertilisation is internal.[6] They are predators of cephalopods, echinoderms, crustaceans and fishes.[5] They have been known to live for up to 42 years.[6]

Helicolenus rockfishes are commercially important species in fisheries in some regions such as southern Australia.[6]

Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Sebastidae". Catalog of Fishes. California Academy of Sciences. Retrieved 29 October 2021.
Christopher Scharpf & Kenneth J. Lazara, eds. (22 May 2021). "Order Perciformes (Part 8): Suborder Scorpaenoidei: Families Sebastidae, Setarchidae and Neosebastidae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 29 October 2021.
Froese, Rainer and Pauly, Daniel, eds. (2021). Species of Helicolenus in FishBase. June 2021 version.
McMillan, P.J.; Francis, M.P.; Paul, L.J.; et al. (2011). New Zealand fishes. Volume 1: A field guide to common species caught by bottom and midwater fishing. New Zealand Aquatic Environment and Biodiversity Report. Vol. 68. p. 196.
J-C Hureau. "Rockfish (Helicolenus dactylopterus)". Fishes of the NE Atlantic and the Mediterranean. Marine Species Identification Portal. Retrieved 29 October 2021.
Bray, D.J. (2018). "Helicolenus percoides". Fishes of Australia. Museums Victoria. Retrieved 29 October 2021.

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