Biology:Gigantactis

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Short description: Genus of fishes

Gigantactis
Gigantactis.jpg
Gigantactis gargantua
Gigantactis vanhoeffeni.jpg
Gigantactis vanhoeffeni
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Lophiiformes
Family: Gigantactinidae
Genus: Gigantactis
A. B. Brauer, 1902[1]
Type species
Gigantactis vanhoeffeni
A. B. Brauer, 1902
Synonyms[2]
  • Teleotrema Regan & Trewavas, 1932

Gigantactis is a genus of deep-sea fish of the family Gigantactinidae, first described in 1902 by August Brauer.[3][1] The species in this genus are poorly known and found in all oceans, at depths of 1,000–2,500 metres (3,300–8,200 ft). The most striking feature of these fish is extremely enlarged first filament of dorsal fin, called the illicium, with bioluminescent photophore at its end. (In G. longicauda the length of the illicium can be up to 3.3 times the standard length of the fish.)[4] The genus name, Gigantactis, derives from the Greek, gigas (gigantic ) and aktis (ray), describing the genus by its long dorsal-fin spine which serves as a lure.[5]

Species

(As of 2018), there are currently 21 recognized extant species in this genus:[6]

  • Gigantactis balushkini Kharin, 1984
  • Gigantactis cheni H. C. Ho & K. T. Shao, 2019
  • Gigantactis elsmani Bertelsen, Pietsch & Lavenberg, 1981 (Elsman's Whipnose)
  • Gigantactis gargantua Bertelsen, Pietsch & Lavenberg, 1981 (Gigantic Whipnose)
  • Gigantactis gibbsi Bertelsen, Pietsch & Lavenberg, 1981
  • Gigantactis golovani Bertelsen, Pietsch & Lavenberg, 1981
  • Gigantactis gracilicauda Regan, 1925
  • Gigantactis herwigi Bertelsen, Pietsch & Lavenberg, 1981
  • Gigantactis ios Bertelsen, Pietsch & Lavenberg, 1981
  • Gigantactis kreffti Bertelsen, Pietsch & Lavenberg, 1981
  • Gigantactis longicauda Bertelsen & Pietsch, 2002
  • Gigantactis longicirra Waterman, 1939
  • Gigantactis macronema Regan, 1925
  • Gigantactis meadi Bertelsen, Pietsch & Lavenberg, 1981
  • Gigantactis microdontis Bertelsen, Pietsch & Lavenberg, 1981
  • Gigantactis microphthalmus Regan & Trewavas, 1932
  • Gigantactis paxtoni Bertelsen, Pietsch & Lavenberg, 1981 (Paxton's whipnose)
  • Gigantactis perlatus Beebe & Crane, 1947
  • Gigantactis savagei Bertelsen, Pietsch & Lavenberg, 1981
  • Gigantactis vanhoeffeni A. B. Brauer, 1902 (Cosmopolitan whipnose)
  • Gigantactis watermani Bertelsen, Pietsch & Lavenberg, 1981

References

Wikidata ☰ Q2704001 entry