Stomatella snail

[good alex]

well i was looking at my fuge when i saw one of my stomatella snails (spelling?) jolting back and fourth, and then i saw a small cloud shoot from his mouth. I think he was releasing sperm in my fuge. well i got some pics, and a video of him doing it, but the quality is low.
Does anyone know how these snails reproduce?
You can see the sperm coming out of the snail at the end of the video better.

 

[good alex]

So the jerking motion I was talking about was from 00:49 to 00:40 seconds left.
And the sperm being released is from 00:22 to 00:20, theres another snail coming down on the glass, look right under him, and you'll see some little clowds.

 

[ovenmitt]

We have tons of these guys in our tank, and I have seen them do this often. Sometimes if they get the timing right I have seen upwards of around 10 or so doing it at the same time and you can see a difference in the clouds. Some are fine mist while others have larger particles clouds. Pretty cool to see it all happening.

 

[dragonboy]

They tend to do that when they are fertilizing eggs its like watching animal ejaculating himself hahahaha....