Yep that's a Popeyed mullet. When I lived on the coast in NC we used to catch them in cast nets off the pier. The schools would be so thick it would take 2 people to pull the net in. You could also snag them with several treble hooks on the like!
My granddaddy used to go fishing down in Darien, GA and caught mullet. They would fry them up after a big fishing trip. Oh those were the days! I haven't had mullet in probably 15 years! I can remember my dad catching them sometimes as well.