I figure this is a good way to get the conversation going.
We currently have one community tank with a dwarf gourami, corydoras, neon tetras, a small colony of cherry shrimp, an assassin snail, and a plague of ramshorn snails that hitched a ride on some water lettuce we bought a few years ago.
Fish? Just a betta
All creatures in the tank? There are also two assassin snails (there were bladder snails too originally, but well…)