Tarpons

Tarpons are large fish, measuring up to 8 ft (2.5 m) in length and weighing up to 350 lb (160 kg). Their dorsal and anal fins have an elongated ray, which forms a threadlike projection that trails behind the fish. Tarpons are recognized by their silvery color, forked caudal fin, and underbite caused by an extended jawbone that juts out in front of the upper jaw, giving the fish a turned-down, frowning mouth. Both the upper and lower jaw bones extend well behind the large eyes, and the large mouth, jaws, roof of the mouth, and tongue all have rows of sharp, needlelike teeth.

Tarpons are widely distributed in oceans within their range, and are also found in fresh and brackish water. The swim bladder of tarpons has an open connection with the gullet, and is an adaptation for taking in air. Tarpons are often seen swimming in rivers, canals, and mangrove estuaries. In warm months, tarpons swim north, then return to tropical waters when the weather gets cooler.