Some type of slug. Stometella?

[Doob]

 

[Doob]

Probs a good guy right? The new frag also had bubble algae, can I still put him in the DT?

 

[Lionfish Lair]

Yes, it's a stomatella. Put him in.

 

[Untamedrose]

Careful picking him up! They can pull a lizard-like defense move and with detach from part of it's foot! It doesnt kill them but sure cant be good for them.