Is this a pyramid snail?

[Rover88]

Just trying to confirm... Looks like it from hitchhikers guide. But there are experts plenty more used to identifying them then me here!

 

[jlmawp]

Looks like a Cerith snail to me.

EDIT: Whoops, didn't even click in my brain that you had the coin for scale. It's certainly small enough to be a pyramid snail. Where did you find it?

 

[Rover88]

Looks like a Cerith snail to me.

I do have those in the aquarium. This guy was hitching a ride on one of my trochus snails.

Do Ceriths breed in a reef normally?

 

[AlSimmons]

I do have those in the aquarium. This guy was hitching a ride on one of my trochus snails.

This is usually bad IME.

http://reefkeeping.com/issues/2006-09/jf/index.php

 

[jlmawp]

This guy was hitching a ride on one of my trochus snails.

If it’s was a single hitchhiker, you’re probably okay, but just keep an eye on your snails for the next few weeks, just in case. Almost certainly a pyramid snail based on where you found it, along with its size.