Sebastolobus macrochir

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Sebastolobus macrochir
Sebastolobus macrochir noboribetsu.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Scorpaeniformes
Family: Scorpaenidae
Genus: Sebastolobus
Species:
S. macrochir
Binomial name
Sebastolobus macrochir
(Günther, 1877)
Synonyms [1]
  • Sebastes macrochirGünther, 1877
  • Sebastodes macrochir(Günther, 1877)

Sebastolobus macrochir, the broadbanded thornyhead or broadfin thorny head, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in deep waters of the northwestern Pacific Ocean.

Contents

Taxonomy

Sebastolobus macrochir was first formally described in 1877 as Sebastes macrochir by the German born British ichthyologist and herpetologist Albert Günther with the type locality given as the Inland Sea of Japan. [2] When the American ichthyologist Theodore Gill described the genus Sebastolobus Sebastes macrochir was the type species by monotypy, two other species have since been added. [3] [2] The specific name acrochir is a compound of macro which means "long" or "large" and cheirus meaning "hand", an allusion to the broad pectoral fin with its upper 5 or 6 tays elongatedrays. [4]

Description

Young thorny head being sold in Japan Baby Kinki (2678128169).jpg
Young thorny head being sold in Japan

Sebastolobus macrochir has 15-16 spines and 8-10 soft rays in its dorsal fin and 3 spines and 5 soft rays in its anal fin. There is an incision in the pectoral fin with the rays below the incision being widened to form a lobe. The spines on the head are strong and erect. The mouth is large, the; maxillary reaches to the centre of the eye. This species attains a maximum standard length of 44 cm (17 in), although around 26 cm (10 in) is a more typical standard length, and a maximum published weight of 1.2 kg (2.6 lb). The overall colour is yellowish-Red and there is a black blotch on the dorsal fin. [1]

Distribution and habitat

Sebastolobus macrochir is found between 31°N and 51°N in the northwestern Pacific Ocean. [5] Its range extends from Sagami Bay in Japan north to the Kuril Islands and Sakhalin in Russia. This is demersal species which is found at depths of 257 to 1,537 m (843 to 5,043 ft). [1]

Sebastolobus macrochir shizuoka Sebastolobus macrochir shizuoka.jpg
Sebastolobus macrochir shizuoka

Biology

Sebastolobus macrochir is found in areas where there is steep bottom relief near areas of very deep water which results in turbulent currents rising vertically from deeper water, bringing food items to the fish. It is an oviparous fish, the eggs are fertilised internally and the females extrude gelatinous masses containing the eggs. The egg masses float. [1] The smaller fish prey on smaller crustaceans such as gammarids and cumaceans changing to decapods and ophiuroids, mainly Cphiura leptoctenia , in larger fishes. [6]

Related Research Articles

<i>Sebastes</i> Genus of fishes

Sebastes is a genus of marine ray-finned fish belonging to the subfamily Sebastinae part of the family Scorpaenidae, most of which have the common name of rockfish. A few are called ocean perch, sea perch or redfish instead. They are found in the Atlantic and Pacific Oceans.

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

The shortspine thornyhead, also known as the channel rockcod, shortspine channel rockfish or spinycheek rockfish, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is sometimes referred to as the "idiot fish" or "idiot cod" due to its large oversized head and eyes. It is found in the northern and northeastern Pacific Ocean.

<i>Sebastolobus</i> Genus of fishes

Sebastolobus, the thornyheads, is a genus of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. These fishes are native to the northern and eastern Pacific Ocean. They are generally found in deep waters.

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

Sebastes miniatus, the vermilion rockfish, vermilion seaperch, red snapper, red rock cod, and rasher, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is native to the waters of the Pacific Ocean off western North America from Baja California to Alaska.

<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.

<i>Adelosebastes</i> Genus of fishes

Adelosebastes is a monotypic genus of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. The only species in this genus is Adelosebastes latens, the Aleutian scorpionfish. It is found in the northern Pacific Ocean.

<i>Hozukius</i> Genus of fishes

Hozukius is a genus of marine ray-finned fishes belonging to the subfamily Sebastinae within the family Scorpaenidae. They are native to the northwestern 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.

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

Sebastes dallii, the calico 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 central 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.

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

Sebastes ensifer, the swordspine 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.

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

Sebastes joyneri, the Togot seaperch, offshore seaperch or joyner stingfish, 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 northwestern Pacific Ocean.

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

Sebastes ovalis, the speckled 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 deep rocky areas of the Eastern Pacific.

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

Sebastes pachycephalus is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in shallow rocky reefs of Northwest Pacific.

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

Sebastes semicinctus, the halfbanded 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.

<i>Sebastiscus marmoratus</i> Species of fish

Sebastiscus marmoratus, the sea ruffe, false kelpfish or dusky stingfish, 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 Pacific from southern Japan to the Philippines. It has also been sighted twice in Australia.

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

Sebastes melanostictus, the blackspotted 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 northern Pacific Ocean.

<i>Sebastolobus altivelis</i> Species of fish

Sebastolobus altivelis, the longspine 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 deep waters of the northeastern Pacific Ocean. Longspine thornyhead are similar in appearance to shortspine thornyhead though they don't grow as large and are typically found in deeper water.

<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.

References

  1. 1 2 3 4 Froese, Rainer; Pauly, Daniel (eds.) (2021). "Sebastolobus macrochir" in FishBase. August 2021 version.
  2. 1 2 Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Sebastolobus". Catalog of Fishes . California Academy of Sciences . Retrieved 30 December 2021.
  3. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Sebastidae". Catalog of Fishes . California Academy of Sciences . Retrieved 30 December 2021.
  4. ↑ 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 30 December 2021.
  5. ↑ "Key Information on Broadbanded thornyhead (Sebastolobus macrochir)". Sea Around Us. Retrieved 30 December 2021.
  6. ↑ Ohmura, T.; Hamatsu, T.; Takahashi, T. (2005). "Food habits of kichiji rockfish Sebastolobus macrochir in summer on the continental slope off the Pacifi coast of Hokkaido, Japan". Bulletin of the Japanese Society of Scientific Fisheries (Japan). 74 (4): 584–593. Retrieved 30 December 2021.
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