Balloon Fish are a gameplay mechanic in .

To make the fish you're going to blow up the balloon all the way up until the end.
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And fishing with balloons is incredibly similar to bobber fishing, fishing with a cork, or kite fishing… but as you will see in the special “How To” video from our friend Josh Jorgensen of , balloon fishing has a few distinct advantages over those methods.
A Balloon Fish as seen from a different angle.
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The pufferfish's secondary defense mechanism, used if successfully pursued, is to fill its extremely elastic with water (or air when outside the water) until it is much larger and almost in shape. Even if they are not visible when the puffer is not inflated, all puffers have pointed spines, so a hungry predator may suddenly find itself facing an unpalatable, pointy ball rather than a slow, tasty fish. Predators which do not heed this warning (or which are "lucky" enough to catch the puffer suddenly, before or during inflation) may die from choking, and predators that do manage to swallow the puffer may find their stomachs full of , making puffers an unpleasant, possibly lethal, choice of prey. This is found primarily in the and , although smaller amounts exist in the and , as well as trace amounts in muscle. It does not always have a lethal effect on large predators, such as sharks, but it can kill humans. A Balloon Fish in the final boss battle,
Photo provided by FlickrOfficial art of a Balloon Fish.
Photo provided by FlickrThe Balloon Fish is an incredibly infamous enemy from , and has been referenced in many titles.
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Biologists think pufferfish, also known as blowfish, developed their famous “inflatability” because their slow, somewhat clumsy swimming style makes them vulnerable to predators. In lieu of escape, pufferfish use their highly elastic stomachs and the ability to quickly ingest huge amounts of water (and even air when necessary) to turn themselves into a virtually inedible ball several times their normal size. Some species also have spines on their skin to make them even less palatable.The body of the balloonfish is covered in long, sharp spines that extend when the fish inflates by taking in water. All members of the are capable of inflation, and may also change in color when threatened.Balloonfishes, Diodon holocanthus (Linnaeus, 1758), aka balloon porcupinefishes, blotched porcupine fishes, blotched porcupines, brown porcupine fishes, fine-spotted porcupinefishes, freckled porcupinefishes, freckled porcupinefishes, hedgehog fishes, long-spine porcupinefishes, longspined porcupinefishes, porcupines, porcupinefishes, spiny balloonfishes, and spiny puffers..., are known for their large eyes, spines and their ability to swell up like a balloon when attacked. This rather comical species reaches between 20- cm to a maximum of cm. They have a total of 13-15 dorsal and anal soft rays. Juveniles have spots on their ventral (under) sides, adults have dark blotches and spots on their dorsal (upper) sides. They have 14-16 spines between their snouts and dorsal fins. A large brown bar is found above and below each eye; and a broad transverse brown bar on their occipital region (back of the head).Balloonfish are , generally hiding in crevices in the reef during the day. The teeth are fused forming a strong, beak-like mouth for consuming snails, , and hermit crabs. These fish are relatively poor swimmers.Balloonfishes are circumtropical in distribution. These fish are found in the Western Atlantic from Florida, USA to the Bahamas and Brazil, in the Eastern Atlantic around 30°N-23°S, and in South Africa. In the Eastern Pacific from Hawaii to Pitcairn and the Easter Islands, and from southern California, US to Colombia and the Galapagos Islands. They are reef fish with a depth range of 2- m.Balloonfish

Linnaeus, 1758

Body with a truncated head, olive to brown. A dusky band runs from eye to eye, dusky blotches or bands may be present on the back. Iris yellow, pupil with iridescent blue-green specks. Head and body with long spines (). Spines usually lowered, but may become erect without inflating the body. Small dark spots on the body, no spots on the fins ().
Size up to 50 cm.

Inhabits shallow reefs to open soft bottoms, down to 15 m. They are slow swimmers using mainly the pectoral, anal and dorsal fin. Feed during the night on mollusks, sea urchins, hermit crabs and crabs.
Juveniles pelagic to about 6 - 9 cm.

Occasionally to uncommon Florida, Bahamas and Caribbean.