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steeler58
07-28-2018, 04:05 AM
Another nice species of Cory, Corydoras nanus

Information: https://www.planetcatfish.com/corydoras_nanus


https://youtu.be/NV_GOG_djM4

steeler58
07-28-2018, 04:05 AM
https://youtu.be/8KvfwiDqk_Q

steeler58
07-28-2018, 04:06 AM
https://youtu.be/UFL1EmBtCHU

steeler58
07-28-2018, 04:07 AM
https://youtu.be/poTsBH0vxG8

steeler58
07-28-2018, 04:07 AM
https://youtu.be/ZxpiYImGCo0

DoubleDutch
07-28-2018, 07:48 AM
C.nanus is hardly in the trade and often it appear tot be C.napoensis

steeler58
07-28-2018, 04:29 PM
Easy to see why they get confused.


https://youtu.be/KtL3uYwOuFg

This from seriously fish "This species is superficially similar to several others in the genus, the most common of which is C. elegans. As a result these are often referred to as the “elegans group”, other members of which include C. bilineatus and C. nanus. They can be quite tough to tell apart, the main distinguishing feature of C. napoensis being the dark marking in the upper part of the dorsal fin in males. Females of the species are much trickier to identify correctly, especially as C. napoensis and C. elegans exist sympatrically in nature and often appear for sale together in mixed shipments."

DoubleDutch
07-28-2018, 04:38 PM
Correct Lee and there are definitive C.nanus in the shown vids, but I doubt in all.

They are "offered" quite often here, though coming from Surinam / French guyana they are soooooo rare, that it can't be C.nanus in most cases.

Just like all C.trilineatus are sold as C.julii.around the world.

DoubleDutch
07-28-2018, 05:45 PM
Lee, I've watched the vids very closely.
I think the two first ones show C.nanus.
They have a slightly different shape of body and their mouth is shaped and placed sligthly differently than the others.

In the other vids I notice Corys showing the spot in the dorsal. Together with the other shape (more "cylindric") I expect them to be napoensis. Besides that all C.elegans shows several appearances (depending on catching locality)