Does anyone know what this guy is?

[salttanklife]

He keeps puffing out a cloud of smoke when my fish go near him. Had my tank up and running over a year and I've never seen it before

 

[TJ's Reef]

Stomatella Snail, really a good guy for your Reef's CUC. And the nicer looking variant being Black.

Cheers, Todd

 

[salttanklife]

Okay thanks, the smoke he was putting off wasn't toxic right?

 

[salttanklife]

I just read up a little on them and it says that it was probably releasing eggs