Is this a nassarius or something else?

[Rawsreef]

Found this guy on the rock. I never put any nas snails in here, so I'm wondering if this might be a hitchhiking pest.

Looks like a nas due to the "trunk" but not convinced.also has a reddish body, which I've never seen before.

Thoughts?

 

[tbrown]

Looks more like a possible Dove Snail?

@ISpeakForTheSeas