I always enjoy seeing a Balloonfish on the coral reef. 🙂
I’m back to quoting from the Florida Museum of Natural History website for species information. Their article about the balloon fish says,
This slow-moving fish has small fins for navigating the shallow reefs or sea grass beds it prefers. Its teeth are formed into a beak that can crush shells of the mollusks and crustaceans it hunts at night.
The article continues to say,
The body is covered in long, sharp spines that stick out when the fish inflates. The balloonfish inflates by taking water into its body when it is threatened. All members of the family Diodontidae are capable of inflation. Along with inflation, there may also be a color change due to the excitement.
I encourage visitors to go the website and read more.