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Swellfish vs. Pufferfish — What's the Difference?

Swellfish vs. Pufferfish — What's the Difference?

Difference Between Swellfish and Pufferfish

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Swellfish

(zoology) Any plectognath fish that dilates itself, such as the pufferfish.

Pufferfish

Any of various prickly, often poisonous, chiefly marine fishes of the family Tetraodontidae that have a beaklike mouth and puff themselves up when threatened, by swallowing water or air. Also called blowfish, puffer.

Swellfish

Any plectognath fish that dilates itself, as the bur fish, puffer, or diodon.

Pufferfish

Any species of fish of the family Tetraodontidae that have the ability to inflate themselves to a globe several times their normal size by swallowing water or air when threatened; puffer, blowfish, swellfish, balloonfish, globefish.

Pufferfish

A delicacy popular in Japan served raw as sushi that may, if improperly prepared, contain deadly levels of neurotoxins; (Japanese) fugu.
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