Gobionotothen marionensis

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Gobionotothen marionensis
Gobionotothen marionensis, the lobe-lip notothen.jpg
Dorsal and lateral view of a specimen from the Muséum National d'Histoire Naturelle (MNHN), France
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Nototheniidae
Genus: Gobionotothen
Species:
G. marionensis
Binomial name
Gobionotothen marionensis
(Günther, 1880)
Synonyms [1]
  • Notothenia marionensisGünther, 1880
  • Notothenia angustifrons sandwichensisNybelin, 1947

Gobionotothen marionensis, the lobe-lip notothen, is a species of marine ray-finned fish belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to the South Georgia and the South Sandwich Islands in the Atlantic Ocean, and the Crozet and Prince Edward Islands in the Indian Ocean. [2] [3] >

Contents

Taxonomy and etymology

Gobionotothen marionensis was first formally described in 1880 as Notothenia marionensis by the German-born British ichthyologist Albert Günther with the type locality given as the Challenger Deep off Marion Island in the Indian Section of the Southern Ocean. The type was collected during the Challenger Expedition. [4] G. angustifrons is treated as a synonym of this species by some authorities [3] but as a valid species by others. [4] The specific name marionensis refers to the type locality, Marion Island. [5]

Description

This species is a relatively small notothen, attaining a maximum length of 20 cm (7.9 inches). In alcohol, this species is generally colored grayish-brown, with four indistinct dark saddles on the back. The first saddle reaches the base of the pectoral fin. The rounded caudal fin has a dark bar present. When encountered in real life, the saddles are much more distinct and form transverse bars which break up into spots on each side of the body. Dark spots and blotches are present around the head, fins and lateral part of the body (which are also present in specimens preserved in alcohol, but again, these are much less distinct than in real life). A series of small, dark spots is present on the pectoral fin rays, and a blackish spot is often present on the upper part of the fin's base. [3] [2]

Ecology

This species inhabits shelf waters depths of 0-150 m (0-492 ft). It is a diurnal, benthopelagic predator that feeds on benthic invertebrates. Crustaceans, especially krill, mysids, isopods and amphipods, are the major component of the diet in the Atlantic Ocean, however, polychaetes are also consumed at South Georgia (generally consumed by individuals larger than 12 cm (4.7 inches) in total length). Specimens in the South Sandwich Islands feed almost exclusively on amphipods. Decapods and polychaetes form the main part of the diet at the Prince Edward Islands, where they compose 54% and 30 % of the diet respectively. When the fish reach 7 cm (2.8 inches) in total length, they become ambush predators. Pelagic prey is virtually absent from the diet. [3] [2] [6]

Known predators of this species include the dusky dolphin and the Antarctic fur seal. [1]

Commercial importance

This species is of no interest to commercial fisheries. [1]

Related Research Articles

Nototheniidae Family of fishes

Nototheniidae, the notothens or cod icefishes, is a family of ray-finned fishes, part of the suborder Notothenioidei which is traditionally placed within the order Perciformes. They are largely found in the Southern Ocean.

Marbled rockcod Species of fish

The marbled rockcod is a species of marine ray-finned fish, belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to the Southern Ocean, where it can be found at depths from 5 to 350 m. This is a commercially important species.

<i>Notothenia</i> Genus of fishes

Notothenia is a genus of marine ray-finned fishes belonging to the family Nototheniidae, the notothens or cod icefishes with the species in this genus often having the common name of rockcod. They are native to the Southern Ocean and other waters around Antarctica.

Painted notie Species of fish

The painted notie, or painted notothen, is a species of marine ray-finned fish, belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to the Southern Ocean.

<i>Dolloidraco</i> Species of fish

Dolloidraco is a monotypic genus of marine ray-finned fish, its only known species being Dolloidraco longedorsalis, belonging to the family Artedidraconidae, the barbeled plunderfishes. It is native to the Southern Ocean in the waters around Antarctica.

Mawsons dragonfish Species of fish

Mawson's dragonfish is a species of Antarctic dragonfish native to the Southern Ocean around Antarctica. It is found at depths of from 110 to 300 metres over the continental shelf. This species is the only known member of its genus.

Gerlachea is a monotypic genus of marine ray-finned fish belonging to the family Bathydraconidae, the Antarctic dragonfishes, its only species is Gerlachea australis. It is found at depths of from 200 to 670 metres over the Antarctic continental shelf. This species is the only known member of its genus.

Ploughfish Species of fish

The ploughfish is a species of Antarctic dragonfish native to the Southern Ocean around Antarctica. It is found at depths of from 0 to 550 m over the Antarctic continental shelf. This species is the only known member of its genus.

Emerald rockcod Species of fish

The emerald rockcod, also known as the emerald notothen is a species of marine ray-finned fish belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to the Southern Oceanwhere it is acommercially important species.

<i>Gobionotothen</i> Genus of fishes

Gobionotothen is a genus of marine ray-finned fishes belonging to the family Nototheniidae, the notothens or cod icefishes. They are native to the Southern Ocean.

Grey rockcod Species of fish

The grey rockcod, also known as the grey notothen, stripe-eyes notothen or stripe-eyed rockcod, is a species of marine ray-finned fish belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to the Southern Ocean,The grey rockcod feed mainly on macrozooplankton and is of minor importance to commercial fisheries. It is the only species in the genus Lepidonotothen

Toad notie Species of fish

The toad notie, or toad notothen, is a species of marine ray-finned fish, belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to the Indian sector of the Southern Ocean.

Nototheniops is a genus of marine ray-finned fishes belonging to the family Nototheniidae, the notothens or cod icefishes. The species in this genus are native to the Southern Ocean.

<i>Lindbergichthys nudifrons</i> Species of fish

Lindbergichthys nudifrons, the yellowfin rockcod, also known as the yellow notie or the gaudy notothen, is a species of marine ray-finned fish, belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to the Atlantic sector of the Southern Ocean.

<i>Patagonotothen guntheri</i> Species of fish

Patagonotothen guntheri, the yellowfin notothen, is a species of notothen found in the Argentinian region of Patagonia, the Falkland Islands, the Burdwood Bank and the Shag Rocks west of South Georgia on the continental shelf at depths of 120-250 m, but may be found in waters deeper than 250 m in the Argentinian region.

<i>Gobionotothen gibberifrons</i> Species of fish

Gobionotothen gibberifrons, the humped rockcod or the humphead notothen, is a species of marine ray-finned fish belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to the islands of the Scotia Arc, the northern part of the Antarctic Peninsula, and Heard Island in the Southern Ocean. This species inhabits depths of 6-429 m, but is most abundant at depths of 100-400 m, at least around Elephant Island.

Gobionotothen acuta, the triangular rockcod or the triangular notothen, is a species of marine ray-finned fish belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to the French Southern and Antarctic Lands, the Heard Islands and the Kerguelen Plateau in the Southern Ocean.

<i>Notothenia cyanobrancha</i> Species of fish

Notothenia cyanobrancha, the blue rockcod, bluegillnotothen, or bluegill rockcod, is a species of marine ray-finned fish, belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to the Kerguelen and Heard Islands in the Southern Ocean.

Patagonotothen brevicauda, the Patagonian rockcod, is a species of marine ray-finned fish, belonging to the family Nototheniidae, the notothens or cod icefishes. It is native to oceans of the Patagonian region, including Tierra del Fuego, the Strait of Magellan, the Beagle Channel and the Falkland Islands.

Stocky rockcod

The stocky rockcod, also known as the bandtail notothen, is a species of marine ray-finned fish belonging to the family Nototheniidae, the notothens or cod icefishes. It is found in the Southern Ocean.

References

  1. 1 2 3 Froese, Rainer; Pauly, Daniel (eds.) (2021). "Gobionotothenia marionensis" in FishBase. June 2021 version.
  2. 1 2 3 Miller, Richard Gordon (1993). A History and Atlas of the Fishes of the Antarctic Ocean. Nevada, USA: Foresta Institute. p. 792.
  3. 1 2 3 4 H.H. Dewitt; P.C. Heemstra; and O. Gon (1990). "Nototheniidae Notothens". In O. Gon and P.C. Heemstra (eds.). Fishes of the Southern Ocean. South African Institute for Aquatic Biodiversity. ISBN   9780868102115.
  4. 1 2 Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Gobionotothen". Catalog of Fishes . California Academy of Sciences . Retrieved 21 September 2021.
  5. ↑ Christopher Scharpf & Kenneth J. Lazara, eds. (12 April 2021). "Order Perciformes: Suborder Notothenoididei: Families Bovichtidae, Pseaudaphritidae, Elegopinidae, Nototheniidae, Harpagiferidae, Artedidraconidae, Bathydraconidae, Channichthyidae and Percophidae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 21 September 2021.
  6. ↑ (In Polar Biology, June 2005) Pakhomov, Evgeny; Davis, Simon; Kaehler, S.; Kalinga, Robert M. Diet and daily ration of two nototheniid fish on the shelf of the sub-Antarctic Prince Edward Islands.
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