Unknown bug on frag

[brett.sizeland]

Does anyone know what this snail looking thing is?

Found on a frag plug of a frag that isn't doing very well.

 

[Lovemyreef2015]

The band's in the shell reminds my of a type of marginella snail. Can you put it in a container with some tank water and take some more pictures?

 

[brett.sizeland]

The band's in the shell reminds my of a type of marginella snail. Can you put it in a container with some tank water and take some more pictures?

Unfortunately I found it last night and took some photos and then chucked it. I dipped the frag and nothing came off it.

Here are the other photos I took not sure if it's any easier to see.

 

[DesertReefT4r]

Did it have hard shell like a snail? Looks like a stomatella snail, harmless.

 

[brett.sizeland]

Did it have hard shell like a snail? Looks like a stomatella snail, harmless.

It did have a hard shell. I have plenty of stomatella snails in my tank but look completely different to this.