I'm wondering about experiences with two species:
1. Hara jerondi-I'd get 3 (https://aquaticarts.com/collections/...-mini-catfish;
msjinkzd also has a species spotlight on them)
2. Cardinal tetra (in sufficient school size to minimize nippiness)
I'm looking for: (1) a bottom feeder fish, and (2) a colorful fish. Ideally both of these would be Asian (and not Amazonian) as I try to keep it loosely Asian, but I'm getting more open minded.
I've got a very peaceful male betta (big change from my last guy who didn't even tolerate a nerite!) in a well planted 20 long, along with many red cherry shrimp he seems not to notice and 13 celestial pearl danios (who he also seems oblivious to), plus 3 snail species.
1. Bottom feeders: Otos scare me (they might starve- not a ton of algae, although I do have some), I like pygmy cories but hear reports that really sensitive also. I noticed the Hara jerdoni mini catfish and see some sites recommending them with bettas. Has anyone kept them? Any issues there?
2. Colorful mid-to-top fish, The celestial danios are interesting behaviorally. They're have individual personalities, a neat male-show-off-dance, they're inquisitive, more independent than schoolers. But for some reason, in my tank, they're just kinda...not colorful. My son LOVES cardinal tetra and wants them. I prefer rasboras and danios to tetras, in general, but I'm warming to the idea. But I'd need to get at least 12 to minimize nippiness, right?...and 12 cardinals plus 13 CPDs feels like a lot for a 20g tank (it's over-filtered and parameters are always 0/0/0, but swimming space, etc.) Thoughts? Ideas? I might just get more CPD's...