If by "dwarf loach" you are referring to Y. sudthimunki then yes they are not very common, are rather expensive, and are not great snail eaters.
If by "dwarf loach" you are referring to Y. sudthimunki then yes they are not very common, are rather expensive, and are not great snail eaters.
assassin snails might be better way to go, they wont out grow a 55g and you could keep a couple in the 10g, and they dont reproduce anywhere near as much/as fast as the "pest snails" from what i read