Zoa crushing nudi branch?

[DeepBlueSomething]

Is this a (the?) culprit for my unhappy zoas? Pics not great, but 2 large antenna and visible eye spots.

Could also be a slug -- the purple portion is almost firm like a mantle.

As always, burn it, sump it or good guy?

 

[WWIII]

Looks like a stomatella to me. They are fine and don't mess with anything.

 

[gtguy256]

seconded stomatella snail. good guy

 

[DeepBlueSomething]

Great thanks all!

 

[WWIII]

No problem! Zoas are just like that sometimes, or you may have another culprit, but I'd say with 99.9% confidence the stomatella isn't bugging them.