Snail Id? Safe/harmful?

[Firescue]

Found about 10 last night during a flashlight check. Any ideas on what they are? Safe or Not? Eventually will be turning a 20gal FOWLR into a Reef. They are all small about the size of a BB.

 

[pagojoe]

They're either trochids or turbinids. It looks like there is no animal in the shell from the apertural view? Both options are reef safe algae eaters.

Cheers,



Don

 

[Firescue]

thanks, I had to sacrifice this one to get good pics.

 

[vegita51]

Looks like a collinista snail and I have had many and no problems with them.