Channelled rockfish

Last updated

Channelled rockfish
SetarchGuenthNOAAOkeanos.jpg
Channelled rockfish
Setarches guentheri
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Scorpaeniformes
Family: Scorpaenidae
Genus: Setarches
Species:
S. guentheri
Binomial name
Setarches guentheri
Johnson, 1862
Synonyms [2]
  • Setarches fidjiensis Günther, 1878
  • Setarches parmatus Goode, 1881
  • Bathysebastes albescens Döderlein, 1884
  • Sebastes albescens(Döderlein, 1884)
  • Scorpaena remigera Gilbert & Cramer, 1897
  • Setarches remiger(Gilbert & Cramer, 1897)
  • Setarches marleyi Fowler, 1935

The channelled rockfish (Setarches guentheri), commonly known as the deepwater scorpionfish, is a marine ray-finned fish belonging to the subfamily Setarchinae, which is a part of the family Scorpaenidae. This species is found in various tropical and subtropical oceans and has a wide distribution.

Contents

Taxonomy

The channelled rockfish was first formally described in 1862 by the English zoologist James Yate Johnson with the type locality given as Madeira. [3] In his description Johnson placed the new species in the new monotypic genus Setarches. [4] Subsequent workers added other species to this genus but in 19666 William N. Eschmeyer and Bruce B. Collette synonymised most of these with S. guentheri making Setarches consist only of this species and S. longimanus. [5] This was later re-examined and 3 species were accepted as belonging to the genus Setarches: S. armata , S. guentheri and S. longimanus . [6] A review in 2021 by Wada, Kai & Motomura resurrected the genus Lythrichthys , they type species of which was L. eulabes , one of the names Eschmeyer and Collette had regarded as synonymous with S. longimanus, placing S. cypho (which had also been treated as a synonym of Setarches longimanus) and S. longimanus and two newly described species in the resurrected genus Lythrichthys . [7] S. armata is now considered to be a synonym of the flathead Thysanophrys armata . [8] This left the channelled rockfish (Setarches guentheri) as the only species in the now monotypic Setarches. As of January 2022 this change has been accepted by Catalog of Fishes. [4] The genus name Setarches was not explained by Johnson, it may be derived from saeta meaning "bristle" while the specific name honours Johnson's friend, the German-born British ichthyologist and herpetologist Albert Günther. [9]

Description

The channelled rockfish has a body which has a depth that is equivalent to 28-37% of its standard length, with the larger fish having less deep bodies than the smaller fish. [5] There are 11-13 spines and 9-11 soft rays in the dorsal fin and the anal fin has 3 spines and 4-6 soft rays. The lateral line is almost continuous and is a trough covered by thin membranous scales, which are deciduous. The second spine on the preoperculum is longer and better developed than the first and the third which are of similar length. [2] Living specimens are pinkish red to orange with reddish black spots on the head and body. In smaller individuals the colour is more reddish grey with black spots and the smallest fishes, c. 40 mm (1.6 in), have dark colouration concentrated in a patch above the pectoral fin and below the soft rayed part of the dorsal fin, with a smaller amount of dark colour on the caudal peduncle. [5] This species grows to a maximum total length of 31.4 cm (12.4 in). [2]

Distribution and habitat

The channelled rockfish has the widest distribution of any scorpaenid. [5] It has a circumglobal range on continental shelves in tropical and warm temperate oceans. [1] In the eastern Atlantic it is found from Madeira south to South Africa, [5] In the western Atlantic it is found from off southern Rhode Island south to northern Brazil, including the Gulf of Mexico. It occurs along the Pacific coasts of the Americas from southern British Columbia to Chile and across the Pacific and Indian Ocean to the east coast of Africa. [1] Despite this wide range there is very little genetic difference between widely separated populations of the channelled rockfish. [10] It is a benthopelagic species which has a depth range of 150 to 780 m (490 to 2,560 ft) over soft bottoms and with a water temperature between 5.5 to 12.5 °C (41.9 to 54.5 °F). [2]

Biology

The channelled rockfish live close to the bottom but tends to feed in the water column. [2] It feeds predominantly on pelagic invertebrates. In the Gulf of Mexico, the diet is dominated by benthic crustaceans, like the shrimp and prawns in the genus Oplophorus and a variety of amphipods. The spines in the fins bear venom glands and they can envemonate humans if handled. [1]

Fisheries

Channelled rockfish are sometimes caught in fisheries in the Gulf of Mexico and are of slight commercial value in Mexico. [1]

Related Research Articles

<span class="mw-page-title-main">Setarchinae</span> Family of fishes

Setarchinae, the deep-sea bristly scorpionfishes, is a small subfamily of deep-sea ray-finned fishes, it is part of the family Scorpaenidae. They are small marine fishes, growing up to 25 cm, and are found in tropical and subtropical waters throughout the world.

<i>Scorpaenodes</i> Genus of fishes

Scorpaenodes is a widespread genus of marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. The fishes in this genus are found to the Atlantic, Indian and Pacific Ocean.

<i>Scorpaenopsis</i> Genus of fishes

Scorpaenopsis is a genus of marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. The fishes in this genus are found in the Indian and Pacific Ocean.

<i>Pontinus</i> Genus of fishes

Pontinus is a genus of marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. The scorpionfishes in this genus are distributed in the tropical and warm temperate parts Atlantic, Indian and Pacific Oceans.

Phenacoscorpius, the no-lined scorpionfishes, is a genus of marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. They are native to the western Atlantic, Pacific and Indian oceans.

Pogonoscorpius is a genus of marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. It is a monotypic genus, its ony species is Pogonoscorpius sechellensis which occurs in the western Indian Ocean in the seas around the Seychelles. It is a little known species and, as of 2018, only 2 specimens were known from the Seychelles. It may also occur in the Coral Sea and off Japan and it has been suggested that this taxon is a synonym of Rhinopias argoliba. Others treat it as a valid species and state that it is endemic to the western Indian Ocean.

<span class="mw-page-title-main">Pygmy rockfish</span> Species of fish

The pygmy rockfish, also known as the slender rockfish or Wilson's rockfish, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the eastern Pacific Ocean.

<span class="mw-page-title-main">Barchin scorpionfish</span> Species of fish

The barchin scorpionfish is a species of marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. It comes from the Indo-Pacific. The species is commonly seen in areas with mixed sand and rubble in reef flats, shallow lagoons, and channels.

<i>Thysanophrys</i> Genus of fishes

Thysanophrys is a genus of marine, demersal ray-finned fish belonging to the family Platycephalidae. These fishes are native to the Indian Ocean and the western Pacific Ocean.

<i>Trachyscorpia</i> Genus of fishes

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.

<i>Ectreposebastes</i> Genus of fishes

Ectreposebastes is a genus of marine ray-finned fish, belonging to the subfamily Setarchinae, the deep-sea bristly scorpionfishes, part of the family Scorpaenidae. The genus is found in the Atlantic, Indian and Pacific Oceans.

Lioscorpiusis a genus of marine ray-finned fish, belonging to the subfamily Setarchinae, the deep-sea bristly scorpionfishes, part of the family Scorpaenidae. They are native to the western Pacific Ocean.

<i>Minous</i> Genus of fishes

Minous, is a genus of marine ray-finned fishes, it is the only genus in the tribe Minoini, one of the three tribes which are classified within the subfamily Synanceiinae within the family Scorpaenidae, the scorpionfishes and their relatives. They are commonly known as stingfishes. They are found in the Indo-West Pacific.

<i>Snyderina</i> Genus of fishes

Snyderina is a genus of ray-finned fishes, waspfishes belonging to the subfamily Tetraroginae, which is classified as part of the family Scorpaenidae, the scorpionfishes and their relatives. These fishes are found in the western Indian Ocean and the western Pacific Ocean.

<i>Sebastes diploproa</i> Species of fish

Sebastes diploproa, the splitnose rockfish, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the northeastern Pacific Ocean.

<span class="mw-page-title-main">Atlantic thornyhead</span> Species of fish

The Atlantic thornyhead is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in the western Atlantic Ocean and the Caribbean Sea.

<i>Lythrichthys</i> Genus of fishes

Lythrichthys, the red deepwater scorpionfishes, is a genus of marine ray-finned fish, belonging to the subfamily Setarchinae, the deep-sea bristly scorpionfishes, part of the family Scorpaenidae. They are native to the Pacific Ocean.

<i>Scorpaenodes guamensis</i> Species of fish

Scorpaenodes guamensis, the Guam scorpionfish or common scorpionfish, is a species of venomous, marine, ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. It has a wide Indo-Pacific distribution.

<span class="mw-page-title-main">Humpbacked scorpionfish</span> Species of fish

The humpbacked scorpionfish is a species of venomous marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. This species is found in the western Indian Ocean.

<span class="mw-page-title-main">Darkblotched rockfish</span> Species of fish

The darkblotched rockfish is a species of marine ray-finned fish, a rockfish belonging to the subfamily Sebastinae of the scorpionfish family Scorpaenidae. This is a deepwater species of the North Pacific Ocean.

References

  1. 1 2 3 4 5 Russell, B.; Poss, S.; Nunoo, F. & Bannerman, P. (2015). "Setarches guentheri". IUCN Red List of Threatened Species . 2015: e.T15622835A15623502. doi: 10.2305/IUCN.UK.2015-4.RLTS.T15622835A15623502.en . Retrieved 4 January 2022.
  2. 1 2 3 4 5 Froese, Rainer; Pauly, Daniel (eds.) (2021). "Setarches guentheri" in FishBase. August 2021 version.
  3. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Setarches". Catalog of Fishes . California Academy of Sciences . Retrieved 4 January 2022.
  4. 1 2 Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Setarchidae". Catalog of Fishes . California Academy of Sciences . Retrieved 4 January 2022.
  5. 1 2 3 4 5 Eschmeyer, William; Collette, Bruce (1966). "The Scorpionfish Subfamily Setarchinae, including the Genus Ectreposebastes". Bulletin of Marine Science. 16 (2): 349–375.
  6. ↑ Froese, Rainer and Pauly, Daniel, eds. (2021). Species of Setarches in FishBase . August 2021 version.
  7. ↑ Wada, H.; Y. Kai & H. Motomura (2021). "Revision of the resurrected deepwater scorpionfish genus Lythrichthys Jordan and Starks 1904 (Setarchidae), with descriptions of two new species". Ichthyological Research. 68 (3): 373–403. doi:10.1007/s10228-020-00793-z.
  8. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Thysanophrys". Catalog of Fishes . California Academy of Sciences . Retrieved 4 January 2021.
  9. ↑ 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 4 January 2022.
  10. ↑ Hidetoshi Wada; Yoshiaki Kai & Hiroyuki Motomur (2021). "Redescription of the circumglobal deepwater scorpionfish Setarches guentheri (Setarchidae)". Ichthyological Research. 68: 32–54. doi:10.1007/s10228-020-00762-6.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.