11-04-2009, 01:51 AM
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Actually this is correct. I studied an abstract that experimented the reproduction process of Lymnaea stagnalis. They do sperm exchange in order for them to generate fertile eggs. I rescued a lone L. stagnalis (Oh, I know I am weird and sad.) and he never left me a few babies just when I needed more snails for my assassin snails before he passed away.
Originally Posted by Jack Middleton
there will have been another snail in the tank for it to happen or it will have had pre fertilised eggs.