Ok so I think my angel is nipping at some corals. Some of the color is one in some parts. Also they look like they been chewed on. To be more specific I have a yellow tang, 3 clowns 2 orange 1 maroon. 3 bennies 2 scooters 1 lawnmower. 2 fire fish. 2 blue/green chromis. Bunch or hermits serpent star urchin sea slug and sand sifting star fish. I know you probably don't need to know all that. But I figured it would give you a better idea. My guess us it's the angel. If it is. How the heck do you catch him. Lol