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The checkered puffer (Sphoeroides testudineus), like other puffers in the fish family Tetraodontidae, is able to inflate its body by swallowing water (or air, if it is removed from the water), making the fish globular and difficult for predators to attack (Robins et al. 1986). Like many other puffers, the checkered puffer can be highly toxic as a result of tetrodotoxins and saxitoxins in their bodies (Abbott et al. 2009), making them potentially quite dangerous to consume. Like all puffers, it is a poor swimmer and propels itself by flapping its small dorsal and anal fins (Boschung et al. 1983).