The Gray Angelfish (Pomacanthus arcuatus) is gray with yellow pectoral fins and a flat-ended tail. It is common throughout the Caribbean. We have observed it near wrecks as well as on reef walls. Often we have seen them hiding in caves, crevices and swim-throughs in the reef wall.
The French Angelfish (Pomacanthus paru) is similar and exhibits similar behavior. It can be distinguished by the yellow edges of its scales and the bright yellow ring around its eye. Here is a French Angelfish hiding in a crevice in Roatan: