{{Short description|Genus of fishes}} {{Automatic Taxobox | image = Adontosternarchus balaenops.jpg | image_caption = ''Adontosternarchus clarkae'' | taxon = Adontosternarchus | authority = M. M. Ellis, 1912<ref name = "Cof family">{{Cof family|family=Apteronotidae|access-date=23 May 2025}}</ref> | type_species = ''Sternarchus sachsi'' | type_species_authority = Peters, 1877<ref name = "Cof family"/> }}
'''''Adontosternarchus''''' is a genus of ghost knifefishes found in the 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 {{convert|18.5-32.2|cm|in|abbr=on}} in total length.<ref name=Sleen2017>{{cite book | editor1=van der Sleen, P. | editor2=J.S. Albert | year=2017 | title=Field Guide to the Fishes of the Amazon, Orinoco, and Guianas | publisher=Princeton University Press | page=325 | isbn=978-0691170749 }}</ref><ref name=fishbase>{{FishBase genus | genus = Adontosternarchus| month = August | year = 2017}}</ref><ref name=Santana2012/> They feed on zooplankton and can be found quite deep, with ''A. devenanzii'' recorded down to {{convert|84|m|ft|abbr=on}}.<ref name=Sleen2017/>
==Species== There are currently six recognized species in this genus:<ref name=fishbase/><ref name=Santana2012/>
* ''Adontosternarchus balaenops'' <small>(Cope, 1878)</small> * ''Adontosternarchus clarkae'' <small>Mago-Leccia, Lundberg & Baskin, 1985</small> * ''Adontosternarchus devenanzii'' <small>Mago-Leccia, Lundberg & Baskin, 1985</small> * ''Adontosternarchus duartei'' <small>de Santana & Vari, 2012</small><ref name=Santana2012>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.''</ref> * ''Adontosternarchus nebulosus'' <small>Lundberg & Cox Fernandes, 2007</small> * ''Adontosternarchus sachsi'' <small>(W. K. H. Peters, 1877)</small>
==References== {{Reflist}}
{{Taxonbar|from=Q4684545}}
Category:Apteronotidae Category:Fish of South America Category:Freshwater fish genera Category:Taxa named by Max Mapes Ellis
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