The bi color blennie shoul dhave been called a clown blennie....He sure can play the part. Very comical to watch, and always into something or other, or just perched on or in rocks watching his world go by, flutteringhis eyelahes / brows, and rolling his lips. Mine will occasionally give my snails and hermits a fit, as he likes to knock them off the rock if they get to close to his hideouts, other than that he is about the largest consumer of food of all the fish in that tank, and has yet to spit much of anything out once its in his mouth.....Easy keeper for sure. Mine especially loves sheet algae as well.