Snail ID, whelk or nassarius?

I thought my mantis shrimp wiped out my snail population, but I guess I was wrong. I use to have nassarius snails, about 9 months ago, but Dexter wiped them all out. Its been about 2 weeks since her death, and now I find this little guy. He's about 3/16"........do you guys think whelk or nassarius?

 

Nassarius are easy to identify by looking for a little tube going up and their flat foot that is kinda long. they don't really go into their shells. The shell could be a nassarius, but I would need to see the underside to confirm.

 

This little guy can go completely into his shell, now Im leaning towards whelk.

 

picture of my nassarius's

 

another angle. See who else i got in the pic ?

 

Cant really tell whats in the second pic.

 

It's neither, it's a juvenile columbellid, Euplica scripta. They are the same snails sold as "Strombus Grazers," and are harmless.

Euplica scripta

Cheers,



Don

 

Thats exactly what it looks like. He wasnt dark like a whelk, so I still had a little doubt about that. Wish I saw this before I threw him out, betterr to be safe than sorry though. Thanks, k+.