I have a planted 15g column from Aqueon with a Tetra Whisper 40 filter that needs some new residents. I currently have 3 peppered cories, one serpae tetra and 3 nerite snails. I do not want more serpae tetras. I had 6 at one point and they never swam around much. They just hung out under my piece of driftwood. I love my cories, and I know they'd be happier with a few more friends, but I'm concerned about getting more since the tank's footprint is fairly small ~13"x13". As it is they're way more active than the tetras ever were.
I'd like something with some color ideally, and something that is active. Obviously anything I get will be dependent on what I can find at the two LFSs that I've gotten healthy fish from before. If anyone has any recommendations for places to get healthy fish in New Orleans that would also be appreciated.
I was thinking about cardinal or neon tetras...thoughts?