need snail ID

[jezzeaepi]

I have three snails that I can't Identify.

Heres the first one. I have probably around 10 of these that are between .2 and .4 inches long. The shells are smooth.
The shell that the snail is on top of is about an inch long for scale:

He wouldnt stop moving once I had him out of the water so these turned out a little blurry:

Here is the second and third snail I found. They look pretty similair except for the "spines" which only seem to be found on the larger of the two.

Thanks,
Jesse

 

[crzy4reefs]

i belive the first one is a sundile snail a preditor of zoanthids

not sure on the second one

 

[jezzeaepi]

The shell has similar pattern as the sundial, but unlike the sundial, the shell is not raised at all. Its compltly smooth.

 

[Kiel'thalin]

The second one is a Murex (Chicoreus sp.) snail. They are predatory and will prey on other smaller snails. They are not good to keep if you like to have those things in your tank. I would recommend removing him before you start to lose snails.

 

[Lev F.]

The first one looks like Collonista, they are harmless grazers.

 

[jezzeaepi]

Is the Murex the same as the crown conch? There was a picture on melevs site. On his site however he lists them as reef safe and says nothing of them eating snails. The snail in question has been housed with the first pictured snail in a keg cup and hasnt touched it. Is it possible that there is a reef safe kind and a non reefsafe kind? Or is it most likely jsut a size thnig, in that when they get bigger they will start eatting snails.

 

[jezzeaepi]

anyone else care to say anything about the 2nd and third snail?

 

[serpentman]

The second snail is definitely not a queen conch. Take a look at the underside of the shell. The opening on a queen conch (Strombus gigas) runs the length of the shell. I agree with the assessment as this looks very much like a Chicoreus sp., commonly called a murex (not to be confused with genus murex)

If this is correct, as mentioned, it is a predatory snail and should be removed.

Also, in my opinion, I agree that the first one is a collonista:

http://www.reefkeeping.com/issues/2004-05/rs/index.php