PlanetCatfish.com

hello, last year i bought this fish at an sale of a aquariumclub as corydoras nanus, but I just want to be sure if it is this species or napoensis, because my first off spring is big enough to be sold, and i do want to sell the young under the right name

this is one of the fish

I believe this is C. napoensis. Sorry... . I'm going off the very high contrast between the gold and black. The shade of gold doesn't quite match either. Here's mine. There's a C. napoensis right behind him!
Josh
EDIT: actually after looking at your picture again, compared to mine, I don't think it's C. napoensis either. I'm not sure what he is. Very, very pretty fish!

I have a very similar group that were sold to me as C. elegans. I was leaning more towards napoensis as well, but, I'm no expert, and I think that's what it takes to definitively identify members of the elegans group. I believe there is a lot of variance within the species, especially C. elegans. Because many in the group are so similar I often wonder if there are naturally hybrids.

There is no little amount of confusion with many species within the "elegans" group and the fish you have is almost certainly C. bilineatus. C. nanus is a very seldom seen species from Suriname, which looks similar in pattern to C. elegans, but has an extra thin body stripe and is much slimmer in body shape.

Ian