All FishesCallichthyidaeCorydoradinaeCorydoras (lineage 8 sub-clade 4)  |  | 

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Scientific Name Corydoras (lineage 8 sub-clade 4) arcuatus  Elwin, 1938
Common Names CW036, Super Arcuatus Cory
Bågpansarmal (Sweden), Buepansermalle (Denmark)
Type Locality Amazon River (aquarium specimen).
Pronunciation kor ee doh rass (lineage eight subclade four).
Etymology Cory = helmet, doras = skin. In this case it was incorrectly used to mean armour (cuirasse) instead of skin in allusion to the dual rows of plates that run along the flanks of this genus. This specific epithet refers to its bowed (arcuatus=bowed, as in bent like an archer's bow) colour pattern.
Hop to next section Species Information
Size 60mm or 2.4" SL. Find near, nearer or same sized spp.
Identification The colour pattern forms an even arch (hence the scientific name) of dark stripe from the snout to the lower back. Sometimes the cleithrum will have an iridescent gold or bronze color. Corydoras arcuatus is very similar to Corydoras granti. C. arcuatus can be distinguished by having a longer, straight snout, whereas C. granti has a shorter, more rounded snout. Also, the posterior margin of the pectoral fin spine of C. arcuatus has serrations pointing toward the origin of the spine (toward the body), whereas these serrations point toward the spine tip on C. granti. Finally, when full grown, C. arcuatus is a larger species than C. granti.
General Remarks Corydoras arcuatus is very similar to C. granti , and specimens of C. granti are often sold by pet stores under the name C. arcuatus. A key to the arc-striped corys can be found in the forum HERE.
Hop to next section Habitat Information
Distribution South America: Upper Amazon River basin.
Amazon, Middle Amazon (Solimoes), Purus (click on these areas to find other species found there)

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IUCN Red List Category Least Concern, range map and more is available on the IUCN species page. Last assessed 2020.
Hop to next section Husbandry Information
Breeding Unreported.
Breeding Reports There is no breeding report.
Hop to next section Further Information
Reference Annals and Magazine of Natural History (Series 11) v. 3 (no. 13), pp 126, Pl. 3.
Registered Keepers There are 2 registered keepers, view all "my fish" data.
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Last Update 2022 Jul 17 08:38 (species record created: 2004 Jul 11 00:00)