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F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
( R e d i r e c t e d f r o m M o n o g n a t h i d a e )
Monognathus , or onejaw , is the only genus of the family Monognathidae of deep-sea eels . The name comes from the Greek monos meaning “one” and gnathos meaning “jaw”, a reference to the large mouth in comparison with the rest of the fish, and also the absence of an upper jaw (maxilla and premaxilla bones are absent).[1]
Description [ edit ]
The dorsal and anal fins lack bony supports and the pectoral fins are missing. The snout has a fang connected to glands, which are venomous in adults.[2] These eels are virtually blind, with rudimentary eyes and small olfactory organs, although the male olfactory organs are enlarged, perhaps suggesting a method of "sniffing out" a mate.[1]
Typical lengths are from 4 to 10 cm (1.5–4 in ), the maximum length recorded is 15.9 cm (6.3 in ).
Distribution [ edit ]
They are found at depths of over 2,000 m (6,600 ft ), and are found in all oceans.[3] [1]
Species [ edit ]
The fifteen known species are:[3]
Monognathus ahlstromi Raju , 1974 (Paddletail onejaw)
Monognathus berteli J. G. Nielsen & Hartel , 1996 .
Monognathus bertini Bertelsen & J. G. Nielsen , 1987 .
Monognathus boehlkei Bertelsen & J. G. Nielsen , 1987 .
Monognathus bruuni Bertin , 1936 .
Monognathus herringi Bertelsen & J. G. Nielsen , 1987 .
Monognathus isaacsi Raju , 1974 .
Monognathus jesperseni Bertin , 1936 .
Monognathus jesse Raju , 1974 .
Monognathus nigeli Bertelsen & J. G. Nielsen , 1987 .
Monognathus ozawai Bertelsen & J. G. Nielsen , 1987 .
Monognathus rajui Bertelsen & J. G. Nielsen , 1987 .
Monognathus rosenblatti Bertelsen & J. G. Nielsen , 1987 .
Monognathus smithi Bertelsen & J. G. Nielsen , 1987 .
Monognathus taningi Bertin , 1936 .
References [ edit ]
^ a b c BÖHLKE, EUGENIA B.; BÖHLKE, JAMES E.; LEIBY, MARK M.; McCOSKER, JOHN E.; BERTELSEN, E.; ROBINS, CATHERINE H.; ROBINS, C. RICHARD; SMITH, DAVID G.; TIGHE, KENNETH A. (1989). Orders Anguilliformes and Saccopharyngiformes: Part 9, Volume 1 . Yale University Press. ISBN 978-1-933789-19-4 . JSTOR j.ctvbcd0dm .
^ Poulsen, Jan Y.; Miller, Michael J.; Sado, Tetsuya; Hanel, Reinhold; Tsukamoto, Katsumi; Miya, Masaki (2018-07-25). "Resolving deep-sea pelagic saccopharyngiform eel mysteries: Identification of Neocyema and Monognathidae leptocephali and establishment of a new fish family "Neocyematidae" based on larvae, adults and mitogenomic gene orders" . PLOS ONE . 13 (7 ): e0199982. Bibcode :2018PLoSO..1399982P . doi :10.1371/journal.pone.0199982 . ISSN 1932-6203 . PMC 6059418 . PMID 30044814 .
^ a b Froese, Rainer, and Daniel Pauly, eds. (2011). "Monognathidae" in FishBase . June 2011 version.
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R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Monognathus&oldid=1043537196 "
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