Rhineloricaria generally remeain under 15 cm, that is 6 inches, but I wonder whether they fit your desire: They are gound bound catfish, not algae eaters.

In Europe, "Rhineloricaria parva" is generally offered. I wrote "", because it is almost certain this is not the species, in fact several ...

I was wondering is there were any "twig" cats that are smaller than 5", but readily available. I know there are many genuses of twig catfish, but what would be small, but still common. I really like them, but my tanks are pretty small, so just wondering.

I'm thinking catfish with schooling behavior, that are always swimming in the open. Not really sure about specifics, though.

Thanks! I don't like glass catfish, so anything that swims in open water in schools or alone is what I'm looking for.

So, I was looking at some Glass Catfish, and then I realized they share behavior with, tetras and danios. I don't like glass catfish, so do any other catfish share this trait?