Another snail ID please.

[fishytime]

Found this funky looking snail in my frag tank recently. Any ideas? And should I be worried? Thanks in advance.
http://i116.photobucket.com/albums/o19/fishytime/IMGP1092.jpg

[fishytime]

anyone?

[IceTurf]

well it has interesting coloring but I can't make more then a guess as to what species it is:http://www.liveaquaria.com/product/prod_Display.cfm?pCatId=1133
might be a variation of that, if it doesn't appear to attack anything I think you can just leave it.

[Murminator]

I think it looks like a young Astralium Calcar or star snail, should be ok same family as astrea
Little reading for ya

http://www.gastropods.com/5/Shell_5.html
http://home2.pacific.net.ph/~sweetyummy42/Hitchsnails.html