general plan for a 10 galllon
As a starting point, I had a 10 gallon with 6 serpae tetras, 1 corydorus catfish, and 2 otocinuclus and 2 shrimp.
One might substitute any similarly sized tetra, the shrimp were to clean live plants and so could be skipped. A second cory would ahve been nice, the 2 otos helped clean the glass and brown algae that I had at the start.