Can anyone ID this type snail?

[cato]

Noticed a few new snails in my tank. Not sure if they are good or bad. Anyone know? I can see at least 3 of them. They are about the size of a pencil eraser and appear to be eating the coralline off the rocks.

Here's another shot.

 

[Paintbug]

have a shot of the foot ?

 

[Avi]

I'm not completely sure but my take is that it's a Sundial Snail which is a zoanthid eating snail and should be removed from the reef.

 

[Paintbug]

thats why we need a shot of the foot

 

[TWallace]

Sundial snails travel on their edge, right?

 

[Herpn]

When do they come out? At night or during the day? To my knowledge Sundial come during the day or anytime and the other harmless one come out at night. I have the harmless one that are nocturnal. I just compared your pic to my sail and can not tell for sure. I think Sundial get a bit larger that the others?


Yours look more like sundials though, I hope I am wrong though. Do you have any zoas? If so how are they doing?

 

[Paintbug]

heres a pic of the common sundial Heliacus sp.
http://www.corallibrary.info/showphoto.php?photo=626&cat=537

 

[ShiftNation]

Looks like a zoanthid eating box snail , but the ones Ive seen are black and white checkered . If I remeber correctly they have a cone that they close thier trap with , when in doubt pull that ***** out .

 

[cato]

<a href=showthread.php?s=&postid=8025716#post8025716 target=_blank>Originally posted</a> by Paintbug
have a shot of the foot ?

No but will see what I can do to get one.

 

[cato]

<a href=showthread.php?s=&postid=8026199#post8026199 target=_blank>Originally posted</a> by Herpn
When do they come out? At night or during the day? To my knowledge Sundial come during the day or anytime and the other harmless one come out at night. I have the harmless one that are nocturnal. I just compared your pic to my sail and can not tell for sure. I think Sundial get a bit larger that the others?


Yours look more like sundials though, I hope I am wrong though. Do you have any zoas? If so how are they doing?

They are easier to find after my halide goes off. Can't find them during the day. I have 1 colony of zoas that appear find...will look more closly at them.

 

[reefshadow]

I think that the heliacus have a pyramid shaped operculum - the 'door' on the shell. Not sure as I have never had them but I think I remember this.

 

[Paintbug]

<a href=showthread.php?s=&postid=8027635#post8027635 target=_blank>Originally posted</a> by reefshadow
I think that the heliacus have a pyramid shaped operculum - the 'door' on the shell. Not sure as I have never had them but I think I remember this.

your right the link i provided has a great pic of the operculum

 

[Herpn]

I will try to post a pic of my harmless snails tonight...

 

[cato]

Here's a better pic. The foot is a normal type foot that all my other snails have. No cone or anything even resembling one.

 

[justincognito]

I'm almost certain its a nerite snail

 

[Paintbug]

<a href=showthread.php?s=&postid=8038431#post8038431 target=_blank>Originally posted</a> by justincognito
I'm almost certain its a nerite snail

im thinking the same thing. just not sure what species. it appears to be an algae grazer for sure.

 

[Herpn]

That shot looks like the snails in my tank and mine are not a problem. I could not find the pics of them...

 

[cato]

I will let them be.