Elongated snail?

[MattPLaw]

Hello all!
I have seen a few of these small inverts that seem to have a hard shell like a snail, but they are not what I think of as the classic snail shape. They are long and oval shaped. I have only seen them under frag plugs and on rocks etc. This morning one was kind enough to be on the glass for a photo shoot. The one in the photo is about 0.25" long. Can anyone tell me what this is? And if it is good bad or neutral?
Thanks!

 

[tzabor10]

possibly dangerous. Maybe not. Better pictures would help. It’s definitely an isopod.

 

[ISpeakForTheSeas]

Chitons - harmless/beneficial; good CUC.

 

[MattPLaw]

So if it has bug black eyes it's bad, if it doesn't it's good?

 

[MattPLaw]

I will try to get better pictures, but I am 95% sure it does not have legs. From what I can tell looking up Chitons and Isopods, that would mean it is a Chiton.

 

[ISpeakForTheSeas]

I will try to get better pictures, but I am 95% sure it does not have legs. From what I can tell looking up Chitons and Isopods, that would mean it is a Chiton.

Yeah, if it has a foot like a snail, it's a chiton.

Isopods will have legs and (typically) visible eyes - telling the difference between good and bad isopods can be a bit tricky, but most of the ones we get in our tanks are good.

 

[MattPLaw]

Yeah, if it has a foot like a snail, it's a chiton.

Isopods will have legs and (typically) visible eyes - telling the difference between good and bad isopods can be a bit tricky, but most of the ones we get in our tanks are good.

Sweet, then I will keep an eye out to make sure all of them have a foot, and If so I'll let them do their thing. Thank you both!

 

[OrionN]

If you take picture of the top of the animal then we can differentiate the snail if it is a Limpet or Chiton. Chiton has 8 segments shell while limpet has single cone shape shell. The underside looks similar.
Limpet

Chiton

 

[MattPLaw]

Sweet, next time I see one I will pull it out and get a picture. I get the impression they are still young/ babies because their shells are fairly clear similar to the baby trochus snails in my tank.

 

[OrionN]

These flat snails has in redouble suction. Try to pull them off may result in their death. Abalones and Stomatella snails will look similar from under also

 

[MattPLaw]

These flat snails has in redouble suction. Try to pull them off may result in their death. Abalones and Stomatella snails will look similar from under also

Okay I will be careful . I like my friendly inverts.