Oneirodes

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Oneirodes
Oneirodes eschrichtii.jpg
Oneirodes eschrichtii
Oneirodes.jpg
Oneirodes sp.
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Lophiiformes
Family: Oneirodidae
Genus: Oneirodes
Lütken, 1871
Type species
Oneirodes eschrichtii
Lütken, 1871
Synonyms

Oneirodes is a genus of is a genus of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep sea anglerfishes. These predatory, deep-sea fishes are found around the world. This is the type genus, and the most speciose genus, of the family Oneirodidae. They are sexually dimorphic but, like most taxa within their family, the small males are free living and are not sexual parasites on the larger females. Only the females are used to identify the species in this genus as no species specific charaxcters have been found for males.

Contents

Taxonomy

Oneirodes was first proposed proposed as a monospecific genus in 1871 by the Danish zoologist and naturalist Christian Frederik Lütken when he described Oneirodes eschrichtii. [1] Lütken gave the type locality of O. eschrichtii as off the western coast of Greenland. [2] The 5th edition of Fishes of the World classifies this genus in the family Oneirodidae in the suborder Ceratioidei of the anglerfish order Lophiiformes. [3] Theodore Gill named the family Oneirodidae in 1878 [4] with O. escherichtii as its only species, making Oneirodes the type genus of its family. [5]

Etymology

Oneirodes means "dream-like". Lütken did not explain this choice of name. David Starr Jordan and Barton Warren Evermann suggested in 1898 that the name referred to the small, skin-covered eyes. Alternatively, in 2009, Theodore Wells Pietsch III proposed that the name was given because the fish is "so strange and marvelous that it could only be imagined in the dark of the night during a state of unconsciousness”. [6]

Species

Oneirodes is the most speciose genus in the family Oneirodidae and has the following species classified within it: [7]

Characteristics

Oneiriodes dreamers are characterised by having spines on the sphenotic bone, a deep incision on the rear edge of the operculum, and rod-shaped pelvic bones that are not expanded or expanded only slightly at the tips. The lobe of the pectoral fin is short and wide with the length of the lobe being less than that of the longest pelvic fin rays. There is a spine on the symphysis of the lower jaw and the lower margin of this symphysis is convex. The rays of the caudal fin have no internal pigmentation and the black skin on the caudal peduncle does not extend past the base of the caudal fin. The illicium merges from between the frontal bones, the frontal bones are curved on their upper margin, and the subopercular bone is short and wide with a nearly circular lower part. There are 4, occasionally 5, soft rays in the anal fin. [11] A unique character of the metamorphosed females of Oneirodes is that the posterior end of the pterygiophore of the illicium emerges from the skin on the back, behind the head. [12] The males have unpigmented skin between the nostrils, and the inner surface of the subopercle is also unpigmented. The caudal peduncle has no subdermal pigments, and there are between 7 and 13 denticles on the lower jaw. [13] The females range in standard length from 10 to 213 mm (0.39 to 8.39 in), and the published species descriptions are based on females as there are no known morphological character that separate the males by species. The males are free-living and non-parasitic. Male specimens measure between 7.5 and 16 mm (0.30 and 0.63 in). [11]

Distribution and habitat

Oneirodes dreamers are found in the Atlantic, Pacific and Indian Oceans. They are bathydemersal fishes found at depths between 0 and 3,800 m (0 and 12,467 ft). [14] [15]

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

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

Oneirodidae, the dreamers are a family of marine ray-finned fishes belonging to the order Lophiiformes, the anglerfishes. These fishes are deepwater fishes found in the Atlantic, Indian and Pacific Oceans and it is the most diverse family of fishes in the bathypelagic zone.

Thaumatichthyidae, the wolftrap anglers, is a small family of marine ray-finned fishes, also called the wolftrap seadevils, classified within the suborder Ceratioidei, the deep-sea anglerfishes. They have distinctive upper jaws with movable premaxillaries that can be lowered to form a cage-like trap around the much shorter lower jaw.

<span class="mw-page-title-main">Bulbous dreamer</span> Species of fish

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<i>Tyrannophryne</i> Monotypic genus of fish

Tyrannophryne is a monospecific genus of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep-sea anglerfishes. The only species in the gneus is Tyrannophryne pugnax, the tyrant devil. Like other oneirodids, T. pugnax is a bathypelagic fish with a bioluminescent lure. It is known only from two adolescent female specimens, one caught in 1928 near Tahiti-Rarotonga, and the other in 1956 northwest of Bikini Atoll.

<span class="mw-page-title-main">Anglerfish</span> Bony fish of the teleost order Lophiiformes

The anglerfish are fish of the teleost order Lophiiformes. They are bony fish named for their characteristic mode of predation, in which a modified luminescent fin ray acts as a lure for other fish. The luminescence comes from symbiotic bacteria, which are thought to be acquired from seawater, that dwell in and around the sea.

<i>Chaenophryne</i> Genus of fishes

Chaenophryne is a genus of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep sea anglerfishes. These predatory, deep-sea fishes are found in the tropical and subtropical oceans around the world. Like other deep-sea anglerfishes they are sexually dimorphic with the matamorphosed females dwarfing the metamorphosed males, the males are not sexual parasites.

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Dolopichthys is a genus of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep sea anglerfishes. These predatory, deep-sea fishes are found in the tropical and subtropical oceans around the world.

<span class="mw-page-title-main">Plainchin dreamarm</span> Species of fish

The plainchin dreamarm is a species of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep sea anglerfishes. It is the only species in the monospecific genus Leptacanthichthys. This species occurs in the North Atlantic and North Pacific Oceans at depths down to 2,000 m (6,600 ft).

Lophodolos is a genus of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep sea anglerfishes. These predatory, deep-sea fishes are found in the tropical and subtropical oceans around the world.

Microlophichthys microlophus, the short-rod anglerfish, is a species of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep sea anglerfishes. This anglerfish is found in the deeper waters of the tropical and temperate oceans around the world.

Microlophichthys is a genus of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep sea anglerfishes. The species in this genus are found in the tropical and subtropical parts of the Atlantic, Indian and Pacific Oceans.

<i>Pentherichthys</i> Monotypic genus of fish

Pentherichthys is a monospecific genus of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep-sea anglerfishes. The only species in the genus is Pentherichthys atratus which is found in the bathypelagic zones of the tropical and subtropical Atlantic, Indian and Pacific Oceans. The males of this species are dwarfed and are not parasitic on the females.

<i>Chaenophryne draco</i> Species of fish

Chaenophryne draco, the smooth dreamer, or smooth-headed dreamer, is a species marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep sea anglerfishes. This predatory, deep-sea fish is found in the tropical and subtropical oceans around the world. Like other deep-sea anglerfishes it is sexually dimorphic with the matamorphosed females dwarfing the metamorphosed males, the males are not sexual parasites.

Oneirodes carlsbergi is a species of marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep-sea anglerfishes. This fish is found mainly in the tropical eastern Atlantic and Pacific Oceans.

<span class="mw-page-title-main">Ceratioidei</span> Suborder of fishes

Ceratioidei, the deep-sea anglerfishes or pelagic anglerfishes, is a suborder of marine ray-finned fishes, one of four suborders in the order Lophiiformes, the anglerfishes. These fishes are found in tropical and temperate seas throughout the world. One of the better known traits of the deep-sea anglerfishes is their extreme sexual dimorphism where the males are many times smaller than the females, the males seek out females and use their sharp teeth to clamp onto the females where he remains for the rest of his life, in some species he becomes part of the female. This is the only known natural example of a process called parabiosis. Another common trait of deep-sea anglerfishes is that they use bioluminescence on their esca to attract prey in the darkness of the deep oceans they inhabit.

Chaenophryne melanorhabdus is a species marine ray-finned fish belonging to the family Oneirodidae, the dreamers, a family of deep sea anglerfishes. This predatory, deep-sea fish is found in the Pacific Ocean. Like other deep-sea anglerfishes dreamers are sexually dimorphic with the matamorphosed females dwarfing the metamorphosed males, the males are not sexual parasites.

References

  1. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Oneirodidae". Catalog of Fishes . California Academy of Sciences . Retrieved 21 July 2024.
  2. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Oneirodes". Catalog of Fishes . California Academy of Sciences . Retrieved 21 July 2024.
  3. ↑ Nelson, J.S.; Grande, T.C.; Wilson, M.V.H. (2016). Fishes of the World (5th ed.). Hoboken, NJ: John Wiley & Sons. pp. 508–518. doi:10.1002/9781119174844. ISBN   978-1-118-34233-6. LCCN   2015037522. OCLC   951899884. OL   25909650M.
  4. ↑ Richard van der Laan; William N. Eschmeyer & Ronald Fricke (2014). "Family-group names of recent fishes". Zootaxa. 3882 (2): 1–230. doi: 10.11646/zootaxa.3882.1.1 . PMID   25543675.
  5. ↑ Gill, Theodore (1878). "Synopsis of the pediculate fishes of the eastern coast of extratropical North America". Proceedings of the United States National Museum. 1 (30): 215–221. doi:10.5479/si.00963801.1-30.215.
  6. ↑ Christopher Scharpf (3 June 2024). "Order LOPHIIFORMES (part 2): Families CAULOPHRYNIDAE, NEOCERATIIDAE, MELANOCETIDAE, HIMANTOLOPHIDAE, DICERATIIDAE, ONEIRODIDAE, THAUMATICHTHYIDAE, CENTROPHRYNIDAE, CERATIIDAE, GIGANTACTINIDAE and LINOPHRYNIDAE". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf. Retrieved 21 July 2024.
  7. ↑ Froese, Rainer and Pauly, Daniel, eds. (2024). Species of Oneirodes in FishBase . June 2024 version.
  8. 1 2 Ho, H.-C., Kawai, T. & Amaoka, K. (2016): Records of deep-sea anglerfishes (Lophiiformes: Ceratioidei) from Indonesia, with descriptions of three new species. Zootaxa, 4121 (3): 267–294.
  9. ↑ Prokofiev, A.M. (2014): New and Rare Species of Deepsea Pelagic Fishes of Families Opisthoproctidae, Melanostomiidae, Oneirodidae, and Linophrynidae. Journal of Ichthyology, 54 (6): 377-383.
  10. 1 2 Prokofiev, A.M. (2014): New Species and New Records of Deepsea Anglerfish of the Family Oneirodidae. Journal of Ichthyology, 54 (8): 602-607.
  11. 1 2 Theodore W. Pietsch (1974). "Osteology and relationships of ceratioid anglerfishes of the family Oneirodidae, with a review of the genus Oneirodes Lütken" (PDF). Science Bulletin, Natural History Museum of Los Angeles County. 18: 1–113.
  12. ↑ Mincarone, Michael; Afonso, Gabriel; Di Dario, Fabio; et al. (2021). "Deep-sea anglerfishes (Lophiiformes: Ceratioidei) from off northeastern Brazil, with remarks on the ceratioids reported from the Brazilian Exclusive Economic Zone". Neotropical Ichthyology. 19 (2): e200151. doi:10.1590/1982-0224-2020-0151.
  13. ↑ E. Bertelsen and Theodore W. Pietsch (1983). "The Ceratioid Anglerfishes of Australia" (PDF). Records of the Australian Museum. 35 (2): 77–93. doi:10.3853/j.0067-1975.35.1983.303.
  14. ↑ Froese, Rainer; Pauly, Daniel (eds.) (2024). "Oneirodes acanthus" in FishBase . June 2024 version.
  15. ↑ Froese, Rainer; Pauly, Daniel (eds.) (2024). "Oneirodes flagellifer" in FishBase . June 2024 version.
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