if you're talking about reproducing in the home aquarium, it depends on the species... stomatellas, conchs, and occasionally cerith snails have been known to breed in the aquarium.... im sure there are a few more but I can't remember them right now.will saltwater snail multiply and take over the tank the way fresh water snails do ?
and there are no snails that will "take over the tank" in either aquarium field the noly time that happens in FW tanks is if you overfeed your tank, which causes the snail population to boom in response. all FW snails are harmless and beneficial to have in the tank... i've also never heard of overpopulation incidents occuring inmarine tanks with snails with the possible exception of stomatellas.
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