I bought some live plants for a 55g and one of them had snail eggs on it (the ones that reproduce in ridiculous amounts). A few days later, I had a major problem. A small aquarium store nearby me recommended botias to take care of the snails. I can't remember exactly what type of botia (the ones with a tan colored body), but they definitely ate all of the snails they could find, and aggressively might I add. I would think that assassin snails would be no different to them :uhoh: If you have more snails in there still, good luck.