as far as cool fish to put in a small tank, I like the scarlet badis (dario dario), the peacock gudgeon, sparkling gouramies, and threadfin rainbows.
Also, as far as I'm concerned, any tank with a suitable substrate might as well have a little handful of kuhli loaches, but that's just me.
Also, as far as I'm concerned, any tank with a suitable substrate might as well have a little handful of kuhli loaches, but that's just me.