Nassarius snail juvenile

[TRichardson79]

I found a small nassarius snail crawling about on the glass. I was under the impression that these snails breeding in captivity is rare. I only have 3 adults. Anyone else had this happen?
I can't get a picture because my camera is crap. But it is about 1/2" and a white shell with brown stripes.

 

[Elysia]

Almost sounds like a Collonista snail. Is there a reason why you think that the snails in question are Nassarius? Are they shaped like them?

 

[TRichardson79]

The reason I believe that it is a nassarius snail is because it looks almost exactly like the larger ones in my tank besides the color of the shell, just about the tenth of the size.