Largemouth bass are spawned in a Florida hatchery, tagged and released into public lakes and rivers for anglers to enjoy. But research also benefits. Coded wire tags are inserted by FWC biologists into these largemouth bass. And once the fish are released … biologists can check the fish using a magnetic wand to read the tag. This enables researchers to determine if a fish caught by an angler or re-captured by a biologist using an electrofishing technique were produced at the hatchery. Recapture information is useful for growth and survival rates of Florida largemouth bass produced at the hatchery. FWC biologists are constantly striving to better hatchery and stocking techniques to improve fishing here in Florida … The Fishing Capital of the World.