Our fish tank has been doing very well and we were pleased with our fishes thriving and breeding LOL! Now my big problem is this...when we bought some live plants, some had snail eggs on them which we said, ok ,let them be. Well those tiny snails became parents themselves, breeding alot of babies.........how do I keep the population under control???????? I got a mind to throw them out with the chickens, they are not any bigger than the pencil's eraserhead. We want to keep the biggest snails. We started off with four to six juvies, now they are bigger and breeding. Is there a birth control for these snails? I have NO idea what species they are. I thought they would get big shells like the hermit crabs do but they have not.