I was at my lfs and they had small fighting conch 3 for $15, and then I spotted these snails in with the mexican turbos 3 for $9. They look very similar to fighting conch's, but could anyone id them for me? In the last picture, the shell in the background is not what I bought, it's the shell that my shrimp is messing with. Also, the snail shells are approx. 3 inches long.