I agree with fishy411, you probably don't have a rockfish. Most rockfishes are coldwater species that wouldn't live long in a tropical marine aquarium without a chiller. I use to live in CA as a teenager and was a deckhand in So. California and we would catch various rockfish during the winter and most of those were from 300+ feet. There are some shallow water species as well but they are also cold water species (50-60 degrees and colder). Probably a scorpionfish!
Bean