Snail ID please. Just a large trochus?

[MaccaPopEye]

Hoping I could get an ID on a type of snail.

I recently picked up 2 coral banded shrimp from a tank shut down and they threw in an abalone and these two unknown large snails they had.

I thought they were just massive trochus snails or some kind of algae eater so I thought why not. But I think (not 100% certain though) that since adding them I have had some zoas go missing. They also seem to hang around my zoas a lot. Just want to make sure if I have had any go missing that it isn't because of these unknown snails.

And on a separate note I have a turbo snail that seems to have had a sponge or something grow on it. Its slowly gotten larger over time. Anyone know what it is, is this common? I pulled it out and cleaned off most of the fuzzy stuff today but I don't know what caused it.

Cheers,

Macca

 

[MaccaPopEye]

Bump any ideas?

 

[MaccaPopEye]

Bump

 

[Lionfish Lair]

Yes, they are trochus and aren't the issue with your zoas.

I'm not sure what to say about the thing covering the turbo. I've never seen that before. I think it's a tunicate, though.

 

[MaccaPopEye]

Yes, they are trochus and aren't the issue with your zoas.

I'm not sure what to say about the thing covering the turbo. I've never seen that before. I think it's a tunicate, though.

Awesome thank you I'm not even sure I have had any zoas go missing, it's probably just the snails spending a lot of time on top of them causing them to be shut more.

The stuff covering the turbo was weird. I brushed most of it off though so I'm interested to see if it grows back

 

[Lionfish Lair]

Please let us know if it grows back. I'm pretty certain it's a tunicate and although it may be invasive in the wild, it's rarely an issue in our tanks. I've never seen it totally cover a live moving snail like that.