Red snapper is going to be the main fish they target. After that it's more or less whatever's biting I believe. Expect ling, kings, or small sharks. If you are talking about the 4 hr trips though, they only go out to the jetties and you're more likely to hook into mostly sea catfish (gafftops or hardheads), whiting, and sand trout with the chance of kings, sharks, or ling. Much less likely to catch the latter though, so be warned.