Help to determine

Adam4310

Hello, dear forum members! Please help me identify what kind of creature this is: Thank you in advance!

Kristin

Is all the livestock in place? Maybe some little corpse got caught in the grate?

Zoe7451

No, everything is fine with the others. It crawls around the tank, mostly among the rocks, sometimes releasing a cloudy substance, like a cloud of cigarette smoke.

Jeremy3637

Stomatela

Shane

Thank you very much! She is the one, it's nice that she's a useful little animal.