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Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Otomorpha
Subcohors: Ostariophysi
Sectio: Otophysa
Ordo: Gymnotiformes

Familia: Apteronotidae
Genus: Adontosternarchus

Species (6): A. balaenops – A. clarkae – A. devenanzii – A. duartei – A. nebulosus – A. sachsi
Name

Adontosternarchus Ellis in Eigenmann, 1912

Type species: Sternarchus sachsi Peters, 1877
References

Eigenmann, C. H.; 1912: The freshwater fishes of British Guiana, including a study of the ecological grouping of species, and the relation of the fauna of the plateau to that of the lowlands. Memoirs of the Carnegie Museum, 5 (1): 1–578, Pls. 1-103. BHL
Adontosternarchus and its species (including synonyms) in Catalog of Fishes, Eschmeyer, W.N., Fricke, R. & van der Laan, R. (eds.) 2021. Catalog of Fishes electronic version.

Adontosternarchus is a genus of ghost knifefishes found in Amazon and Orinoco river basins in tropical South America. They have blunt snouts, a dark-spotted or -mottled pattern on a pale background (however, spotting/mottling can be so dense that individuals appear almost all dark) and reach up to 18.5–32.2 cm (7.3–12.7 in) in total length.[1][2][3] They feed on zooplankton and can be found quite deep, with A. devenanzii recorded down to 84 m (276 ft).[1]
Species

There are currently six recognized species in this genus:[2][3]

Adontosternarchus balaenops (Cope, 1878)
Adontosternarchus clarkae Mago-Leccia, Lundberg & Baskin, 1985
Adontosternarchus devenanzii Mago-Leccia, Lundberg & Baskin, 1985
Adontosternarchus duartei de Santana & Vari, 2012[3]
Adontosternarchus nebulosus Lundberg & Cox Fernandes, 2007
Adontosternarchus sachsi (W. K. H. Peters, 1877)

References

van der Sleen, P.; J.S. Albert, eds. (2017). Field Guide to the Fishes of the Amazon, Orinoco, and Guianas. Princeton University Press. p. 325. ISBN 978-0691170749.
Froese, Rainer and Pauly, Daniel, eds. (2017). Species of Adontosternarchus in FishBase. August 2017 version.
de Santana, C.D. & Vari, R.P. (2012): New Species of Adontosternarchus (Gymnotiformes, Apteronotidae) from the Rio Purus Basin, Brazil. Copeia, 2012 (3): 535-540.

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