Trachyscorpia
Trachyscorpia | |
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Atlantic thornyhead (T. cristulata) | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Scorpaeniformes |
Family: | Scorpaenidae |
Tribe: | Sebastolobini |
Genus: | Trachyscorpia Ginsburg, 1953 |
Type species | |
* Scorpaena cristulata Goode & T. H. Bean, 1896[1] |
Trachyscorpia is a genus of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. The species in this genus are found in the Atlantic, Indian and Pacific oceans.
Taxonomy
Trachyscorpia was first described as a genus by the Lithuanian-born American ichthyologist Isaac Ginsburg in 1953 with Scorpaena cristulata, a species described by the American ichthyologists George Brown Goode and Tarleton Hoffman Bean in 1896 from off Georgia, designated as its type species.[1][2] The generic name, Trachyscorpia is a compound of trachys, meaning "coarse" or "rough", and scorpia, which means “scorpion”, the first part is a reference to the ctenoid scales of the type species and the second is derived from Scorpaena the original genus of T. cristulata.[3]
Species
There are currently seven recognised species in this genus:[4]
- Trachyscorpia carnomagula Motomura, Last & Yearsley, 2007 (deepsea scorpionfish)
- Trachyscorpia cristulata (Goode & T. H. Bean, 1896) (Atlantic thornyhead)
- Trachyscorpia echinata (Koehler (fr), 1896) (spiny scorpionfish)
- Trachyscorpia eschmeyeri Whitley, 1970 (Cape rockfish)
- Trachyscorpia longipedicula Motomura, Last & Yearsley, 2007 (stylish scorpionfish)
- Trachyscorpia osheri McCosker, 2008
- Trachyscorpia verai Béarez & Motomura, 2009 (Ecuadorian deep-sea scorpionfish)
Characteristics
Trachyscorpia is characterised by having a large head, which is almost half the length of the body, with a short snout and robust bones with strong spines. They do not have a pit located to the rear of their eyes. The eyes are quite large and have a horizontal ridge running beneath them which is armed with spines. The preoperculum has 4-5 spines, with the 1st spine being longer than the others and this spine has a main spine and a supplementary spine. There are 13 spines and netween 8 and 10 soft rays in the dorsal fin while the anal fin has 3 spines and 5 soft rays, The pectoral fin is not wedge shaped and is bilobed with longest rays at top, there are 21-24 pectoral fin rays and the upper rays are branched. In larger fish the lower pectoral fin rays are fleshy, Thera are rough scales on cheek, in the intraorbital space and behind the eyes while the lateral line is complete, it reaches the base of the caudal fin, and has tubed scales.[5] These species have maximum lengths which vary from 14.7 cm (5.8 in) standard length in T. osheri up to a total length 56.9 cm (22.4 in) in T. echinata.[4]
Distribution and habitat
Trachyscorpia thornyheads are found in the Atlantic, Pacific and Indian Oceans. They are demersal fish which are usually found at depths greater than 100 m (330 ft).[4]
Biology
Trachyscorpia thornyheads are thought to be oviparous and, like other taxa in the tribe Sebastolobini, the females likely extrude internally fertilised eggs in gelatinous masses which float. They have venomous spines. They are predatory fishes feeding on benthic invertebrates and on other fishes.[6]
References
- ^ a b Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Sebastidae". Catalog of Fishes. California Academy of Sciences. Retrieved 31 December 2021.
- ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Thrachyscorpia". Catalog of Fishes. California Academy of Sciences. Retrieved 31 December 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 31 December 2021.
- ^ a b c Froese, Rainer and Pauly, Daniel, eds. (2021). Species of Trachyscorpia in FishBase. August 2021 version.
- ^ "Genus: Trachyscorpia, Thornyheads". Shorefishes of the Greater Caribbean online information system. Smithsonian Tropical Research Institute. Retrieved 30 December 2021.
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Trachyscorpia echinata". Fishbase. August 2021 version.
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- Buccaneer rockfish (S. exsul)
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- Sebastes flammeus
- Yellowtail rockfish (S. flavidus)
- Bronzespotted rockfish (S. gilli)
- Gray rockfish (S. glaucus)
- Chilipepper rockfish (S. goodei)
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- Sebastes hubbsi
- Sebastes ijimae
- Japanese red seaperch (S. inermis)
- Sebastes iracundus
- Sebastes itinus
- Shortbelly rockfish (S. jordani)
- Sebastes joyneri
- Sebastes kawaradae
- Sebastes kiyomatsui
- Sebastes koreanus
- Freckled rockfish (S. lentiginosus)
- Cowcod (S. levis)
- Sebastes longispinis
- Mexican rockfish (S. macdonaldi)
- Atlantic redfish (S. marinus)
- Quillback rockfish (S. maliger)
- Red bream (S. matsubarae)
- Black rockfish (S. melanops)
- Semaphore rockfish (S. melanosema)
- Blackspotted rockfish (S. melanostictus)
- Blackgill rockfish (S. melanostomus)
- Atlantic redfish (S. mentella)
- Vermilion rockfish (S. miniatus)
- Sebastes minor
- Whitespeckled rockfish (S. moseri)
- Blue rockfish (S. mystinus)
- China rockfish (S. nebulosus)
- Tiger rockfish (S. nigrocinctus)
- Sebastes nivosus
- Red perch (S. norvegicus)
- Sebastes notius
- Sebastes oblongus
- Patagonian redfish (S. oculatus)
- Speckled rockfish (S. ovalis)
- Sebastes owstoni
- Sebastes pachycephalus
- Bocaccio rockfish (S. paucispinis)
- Sebastes peduncularis
- Chameleon rockfish (S. phillipsi)
- Canary rockfish (S. pinniger)
- Northern rockfish (S. polyspinis)
- Redstripe rockfish (S. proriger)
- Grass rockfish (S. rastrelliger)
- Yellowmouth rockfish (S. reedi)
- Rosy rockfish (S. rosaceus)
- Greenblotched rockfish (S. rosenblatti)
- Yelloweye rockfish (S. ruberrimus)
- Flag rockfish (S. rubrivinctus)
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- Bank rockfish (S. rufus)
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- Korean rockfish (S. schlegelii)
- Sebastes scythropus
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- Olive rockfish (S. serranoides)
- Treefish (S. serriceps)
- Pinkrose rockfish (S. simulator)
- Blackmouth rockfish (S. sinensis)
- Sebastes spinorbis
- Sebastes steindachneri
- Sebastes swifti
- Ezo seaperch (S. taczanowskii)
- Sebastes thompsoni
- Sebastes trivittatus
- Honeycomb rockfish (S. umbrosus)
- Sebastes variabilis
- Harlequin rockfish (S. variegatus)
- Sebastes varispinis
- Japanese black seaperch (S. ventricosus)
- Norway redfish (S. viviparus)
- Fox jacopever (S. vulpes)
- Sebastes wakiyai
- Pygmy rockfish (S. wilsoni)
- Sharpchin rockfish (S. zacentrus)
- Sebastes zonatus
- Sebastiscus albofasciatus
- False kelpfish (S. marmoratus)
- Sebastiscus tertius
- Shortspine thornyhead (S. alascanus)
- Longspine thornyhead (S. altivelis)
- Broadbanded thornyhead (S. macrochir)
- Deepsea Scorpionfish (T. carnomagula)
- Trachyscorpia cristulata
- Cape rockfish (T. eschmeyeri)
- Stylish Scorpionfish (T. longipedicula)
- Trachyscorpia osheri
- Ecuadorian Deep-sea Scorpionfish (T. verai)
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