The LFS near my house has a bunch of these available. I have not been able to find much about them searching this forum, the internet, and other forums. Anyone have much experience with these? Any pics available?
This is a Krobia sphenozona, which is the most commonly sold species in the genus (and always sold as itanyi, but true itanyi are very rare in the hobby). Recently a new undescribed species has popped up as well, and looks much like the pic but with a blue face.
The ones at the LFS are similar, but the black line turns up to meet the base of the dorsal fin before it gets to the tail. They also have blue spangles on the face. The store labelled them as a Blue Face Mouthbrooder Acara. Maybe what they have is the new species you reference.
Yup, that's the new undescribed species. It's from Brazil, but I haven't found out where exactly yet. Not even sure if it's a mouthbrooder, as it would be the first in the genus to do so. Have seen them in person though, beautiful fish. Didn't have a tank up when I saw them sadly, becuase at $5.99 a piece I would have gotten the whole group!!
The new blue faced ones were being sold as Krobia cf itanyi at the LFS here.
I think I may try to pick up a pair. Would the pointed versus rounded dorsal be a good judge of gender? They are around 1.5 inches, so maybe a bit small to tell. I'll try to post pics if I get them.
For most acaras IME, the fin method does seem to work. Blue acaras are the only exception I've had, everything else has been pretty easy to tell. But to be honest, I've yet to keep Krobia before. This last visit was the first time I've ever seen them in a LFS. But at the 2.5" - 3" mark, it was clear some had long pointed dorsal/anal fins and other were much shorter/rounder.
There are lots of natural groups of acaras, and have been since divided up.
Aequidens was restricted to a group known as 'true acaras' (A. metae, A. patricki, ect). Smiling acaras (curviceps, ect) were put into Laetacara. The blue acara group (which includes green terrors) looks like it will be Andinoacara. Keyholes have their own genus, Cleithracara. Mouthbrooding acaras were put into Bujurquina. And a few other smaller ones like Krobia.