Cute lil fish I must say, but to much work for there size for me personally. They stay small, but I've found them to be pretty aggressive. Snails are a highly favored food, I could never get mine to eat anything that wasn't alive, and so they didn't do real well with me. Stay away from fish with long fins with them, they wil shred bettas and fancy guppies. Cute tho, if you don't mind keeping a snail jar in case your tank runs clean of them, then I'd say go for it, if not, then skip it, and get something else.