Double angler

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Double angler
Diceratias bispinosus.jpg
Two-rod anglerfish, Diceratias bispinosus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Lophiiformes
Family: Diceratiidae
Genera

Bufoceratias
Diceratias
See text for species.

Double anglers are a family, Diceratiidae, of anglerfishes. They are found in deep, lightless waters of the Atlantic, Indian and western Pacific Oceans.[1]

They are easily distinguished from other anglerfishes by their possession of a second light-bearing dorsal fin spine immediately behind the illicium (the bioluminescent lure present in other anglerfishes).

As in other anglerfishes, the male is very much smaller than the female, and after a larval and adolescent free-living stage, spends the rest of his life parasitically attached to a female.

Species in this family are known almost entirely from adolescent females; only two larvae, one adult female, and one adult male have been found.[2]

The first specimen of the two-rod anglerfish (first called Ceratias bispinosus) was collected during the expedition of the HMS Challenger during 1873-1876. It was first described by Albert Günther in 1887 in volume 22 of "Report on the deep-sea fishes collected by H. M. S. Challenger during the years 1873-76. Report on the Scientific Results of the Voyage of ADD" [3]

Species[edit]

The six species in two genera are:

See also[edit]

References[edit]

  1. ^ Froese, Rainer, and Daniel Pauly, eds. (2006). "Diceratiidae" in FishBase. February 2006 version.
  2. ^ Theodore W. Pietsch (2005). "Diceratiidae". Tree of Life web project. Retrieved 4 April 2006. 
  3. ^ "Catalog of Fishes". California Academy of Sciences - Ichthyology. 2007. Retrieved 2008-06-17.