it is now known that all sex changing fish change genders at around 72 percent of their maximum body size. there is a possibility that hormones found in Florida and UK waters are responsible for masculinizing female fish (called protogyny) and feminizing male fish (called protandry). successive hermaphrodites live in coral reefs and include black sea bass, sheepheads, groupers, wrasses, parrotfish, clownfish, coral trout, red throat emperor, and some gobies.