I have three different kind of snails. I have my black mystery snail and the columbian ramshorn in the same aquarium. I woke up one morning this week and i have a clutch of eggs on the top corner of my aquarium. Now the pet stores tell me that i should get rid of the eggs, because I won't want all of the babies. However I do not want to kill the little guys. My question is I read your article about the eggs and that they are very hard to catch the little guys after they hatch, so should i move the eggs into a different aquarium or should i leave them?
Also did these two mate sexually since there different species, should i only keep them with there own kind? Please let me know I cannot find out a lot of info on my little guys and i dont necessarily trust what the people in the pet store say. Right now my black mystery snail is about the size of a golf ball mabey a little bit bigger and she goes to the eggs and is not hurting them but she squishes them, I dont know if she is just checking them out or if mabey shes puting more slime on them, right now there is about 75 to 100 of these peach colored eggs, and you can see the little white spots in the middles of them. Also please let me know if i would release these guys in a lake or pond would they make it through winter or would they all die cause it would be to cold? I would appreciate any info that any one has. Thanks

i dont think different snails can breed with eachother. its possible that the snails breed with themselves as they can change sex. they are probably the ramshorn snails eggs. i would leave them in the tank, they will be fine.

The two snails that you mentioned are different species and can't interbreed, I don't think. They're both apple snails I think. The Columbian ramshorns I've read are apple snails but they're not typical ones if they are. For better information, see http://www.applesnail.net
If the eggs are out of the water, they're regular apple snail eggs. Since you say they're pink, then they sound like they're from your "mystery snail." They may not be fertile unless you got the snail recently (and she had bred then). Apple snails are not hermaphrodites; they're male and female. The eggs aren't guaranteed to hatch even if fertile. If they do, the babies would be easy enough to collect.

Here's a page on the Columbian ramshorn:
http://www.aqualandpetsplus.com/Bug,%20Sna...20Ramshorns.htm

You can move the eggs if you want. It's up to you.
Apple snails are tropical and invasive species. You should not release them into the wild. If you did, they would die in the winter.

you should leave them in the tank.