New Corydoras

[Silurus]

Britto, MR, WB Wosiacki & LF A. Montag, 2009. A new species of Corydoradinae catfish (Ostariophysi: Siluriformes: Callichthyidae) from Rio Solimões basin, Brazil. Copeia 2009: 684–689.

Abstract

A new species of Corydoras from the Rio Urucu basin, a right-bank tributary of the Rio Solimões is described. The new species shares a distinctive pigmentation pattern with Corydoras arcuatus, C. gracilis, and C. narcissus, composed of a uniform light ground color on the body, and a dark, arched stripe from tip of snout to caudal-fin base along the upper portion of the dorsolateral body plates. The new species is readily distinguished from these congeners by the absence of a continuation of the arc-like stripe onto the snout. It also differs from Corydoras gracilis and C. narcissus by the posterior part of the arc-stripe reaching the base of the lower caudal-fin rays, and from C. arcuatus and C. narcissus by the distinctly rounded profile of the snout in lateral view, a greater preadipose distance, and the position of the posterior limit of the cleithrum. Despite the general resemblance, investigation about the position of the new species in light of previous phylogenetic hypotheses concerning this subfamily indicates that the arc-striped coloration pattern was independently acquired.

[husky_jim]

thanks for sharing!...and the name of it?

[Silurus]

Corydoras urucu

[Proteus]

pictures available yet?

[Silurus]

It looks like

Corydoras sp_cf_arcuatus

with seemingly less black on the dorsal fin.

[Coryman]

This species looks very close to the original pictures taken of juvenile C. arcuatus from the Rio Purus. It has a slimmer body, rounded snout and the black arched stripe ends/starts at the eye and does not go onto the snout. There are other morphological differences, which make this species different from other "Skunk" "Arched" Corys. C. arcuatus, C. narcissus C100, CW006 and CW36

Ian

[kim m]

Thought it looked a bit like a C. arcuatus with a longer head, hadn't noticed the arch...would have loved a colour photo!

Apart form this; what are the chances of this species already being in the hobby?

[mummymonkey]

Looks to be a much smaller fish with a body shape more like

Corydoras griseus

. It does look like some of my young

Corydoras arcuatus

but the authors are careful to list the features that distinguish it from them.



Link to my blog (hope no one minds).
http://fcas.wordpress.com/2009/12/21/mo ... ras-urucu/