scott- it's a Brazilian damsel, or dusky damsel- I've got 2 in my 75 FOWLR right now. Overall silvery gray, orange cap on the top of head, bright electric blue markings on head, around eyes and on caudal penducle. Quite common along the SE coast of FL I'm in Fort Pierce, BTW. The orange stripe on the head will fade away as the fish ages. They're as aggressive as beaugregories and they are gluttons also.