is this snail killing my frag?

[Wayne@RC]

is this snail killing my frag? its black and white rectangiles on its spine.thanks wayne. got the frag today with the sail on it

 

[mutateddogbone]

cant see the snail. here is a link see if you can see what he looks like http://www.worldwidereefers.com/forums/showthread.php?4768-Hitchhiker-id-guide