# Rhynchodoras

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{{Short description|Genus of fishes}}
{{Automatic taxobox
| taxon = Rhynchodoras
| authority = [Klausewitz](/source/Wolfgang_Klausewitz) & [Rössel](/source/Fritz_R%C3%B6ssel), 1961
| type_species = ''Rhynchodoras xingui''
| type_species_authority = Klausewitz & Rössel, 1961
| subdivision_ranks = Species
| subdivision = 
}}

'''''Rhynchodoras''''' is a small [genus](/source/genus) of [thorny catfish](/source/thorny_catfish)es native to [South America](/source/South_America).  ''Rhynchodoras'' is closely related to ''[Rhinodoras](/source/Rhinodoras)'' and ''[Orinocodoras](/source/Orinocodoras)''.<ref name="PFK">{{cite web|url=http://www.practicalfishkeeping.co.uk/pfk/pages/item.php?news=1372|title=New doradid has proboscoid mouth|first=Heok Hee|last=Ng|publisher=[Practical Fishkeeping](/source/Practical_Fishkeeping)|date=2007-09-10}}</ref>

== Species ==
There are currently three recognized species in this genus:<ref>{{FishBase genus | genus = Rhynchodoras| month = December | year = 2011}}</ref>
* ''[Rhynchodoras castilloi](/source/Rhynchodoras_castilloi)'' <small>[Birindelli](/source/Jos%C3%A9_Luis_Olivan_Birindelli), [Sabaj Pérez](/source/Mark_Henry_Sabaj_P%C3%A9rez) & [Taphorn](/source/Donald_Charles_Taphorn_Baechle), 2007</small>
* ''[Rhynchodoras woodsi](/source/Rhynchodoras_woodsi)'' <small>[Glodek](/source/Garrett_S._Glodek), 1976</small>
* ''[Rhynchodoras xingui](/source/Rhynchodoras_xingui)'' <small>[Klausewitz](/source/Wolfgang_Klausewitz) & [Rössel](/source/Fritz_R%C3%B6ssel), 1961</small>

==Description==
''Rhynchodoras'' species are distinguished from all other [doradid](/source/doradid)s by their highly modified [jaw](/source/jaw)s which are strongly compressed, elongate, [forceps](/source/forceps)-like in appearance, and project ventrally.<ref name="Glodek">{{cite journal|title=''Rhynchodoras woodsi'', A New Catfish from Eastern Ecuador (Siluriformes: Doradidae) with a Redefinition of ''Rhynchodoras''|first=Garrett S.|jstor=1443769|last=Glodek|journal=[Copeia](/source/Copeia)|year=1976|issue=1|pages=43–46|doi=10.2307/1443769|volume=1976}}</ref> The head is large and longer than it is wide, with a somewhat conical shape. There are three pairs of [barbels](/source/barbel_(anatomy)), one pair of maxillary barbels and two pairs of mental barbels. Barbs occur on the [dorsal fin](/source/dorsal_fin) and [pectoral fin](/source/pectoral_fin) spines; on the anterior surface, barbs are curved towards the tip of the spine, and on the posterior surface are recurved away from the tip of the spine. The [caudal fin](/source/caudal_fin) is forked. There is a series of spined, lateral plates called [scute](/source/scute)s. Eyes are relatively small.<ref name="Glodek"/>

''R. woodsi'' can be differentiated from ''R. xingui'' by a smaller eye and a slightly longer upper jaw than lower jaw.<ref name="Glodek"/> Also, ''R. castilloi'' differs from ''R. woodsi'' by having abundant, punctate [tubercle](/source/tubercle)s on the body, and it differs from ''R. xingui'' in the number of form of its scutes.<ref name="PFK"/>

==References==
{{Reflist}}

{{Taxonbar|from=Q7321693}}

Category:Doradidae
Category:Fish of the Amazon basin
Category:Catfish of South America
Category:Catfish genera
Category:Taxa named by Wolfgang Klausewitz
Category:Taxa named by Fritz Rössel
Category:Freshwater fish genera

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Adapted from the Wikipedia article [Rhynchodoras](https://en.wikipedia.org/wiki/Rhynchodoras) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Rhynchodoras?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.