That one looks a bit different than the one I got with Liverock.com order but all the ones I got were predatory snails. They looked similar to nassarius but they harldy ever went in the sand.
After I added some nassarius, I witnessed one of these snails trying to kill one of my nassarius. I have since moved as many of them out of the tank as possible.
Like I said, that one looks a bit differnt but I would watch out. One of the AA members told me that if it likes the sand, it is probably a nassarius. If it spends most of it time on LR
, then it is probably a predator snail.
Most of the nassarius I have are hidden most of the time. When you feed, they start popping up everywhere. Very cool