My flame hawk is awesome personality wise. I love how he zooms off his perch to nail a piece of food and then returns. Occassionally he does try to drive a fish away who comes too close. He is a percher and doesn't spend much time on the sand. I've had algae blennies, though not at the time as the hawk, and while the algae blenny and hawk wouldn't compete for food, I can see the two arguing over prime perches in the tank,