They need a mate. All snails need a mate, but some are hermaphrotites. They also only have one baby at a time.

 

Some snails ive heared reproduce alone

 

This is just a case of the female carrying already fertilized eggs and dropping them in the new aquarium. These snails are not hermaphrodites and do need a mate to reproduce. If you get a pregnant female, then you will have babies, but if you get a lone male you will not get babies.

You should check out this thread. It's made by one of our members here who has been keeping these snails for over a year now.

 

No animal can reproduce alone except for a few rare parenthrogenic (self cloning) species, snails are not one.

 

What? There are no hermaphroditic snails? I could have sworn pond snails reproduce without a mate! :shock:

 

I have to second this Pond snails and a couple others I thought were dual-sexed and could reproduce on their own.

 

Unless it is a parthenogenetic animal (which are very rare), no animal can reproduce on its own!

Even a basic understanding of biology teaches us that sperm+egg=baby. A single animal, even hermaphrodites, can not reproduce on its own. I do own a self cloning crayfish though.

 

I thought that since hermaphrodite = male + female parts = self-fertilization? *Headtilt; shot.* Huh. I learned something today then o0

 

Your probably thinking of malaysian trumpet snails, pond snails and ramshorn snails. Those are the ones that tend to overrun tanks.

I dont think rabbit snails lay eggs - they give birth to live young