Well, Sea J. You can have a locals only tank. I did it many years ago, however, hook and line is not a good method of catching aquarium fishes. It causes injury and infections that can kill the fish. In addition, most of the species caught on hook and line are inappropriate as ornamental aquarium fishes. Most grow too large and are too aggressive. A good quality net and snorkel or scuba gear is what I recommend. Secondly, know the laws and abide by them, there are size slots for most marine tropicals. They can be found on florida fish and wildlife site. Good luck catching.