Went to LFS to buy live cured rock. Once I got home began to unpackage rock and saw some "creature" in a hole of a rock. Thought it was a snail first then once in tank, boom a lawnmower blenny pops out!! 1st timer here. Seems to be cooperating to tank. No usual behavior. Any top tips to care for it. They lazy or active fish? I know they're algae eaters

