Tetraodontiformes

Tetraodontiformes is an order of ray-finned fishes that includes pufferfish, triggerfish, boxfish, and ocean sunfish. Its members often have specialized jaws and reduced or absent scales.

Actinopterygii: Actinopterygii is the class of ray-finned fishes, whose fins are supported by bony rays. Tetraodontiformes is one order within this vast class of fishes.
Tetraodontidae: Tetraodontidae is the fish family containing pufferfishes, characterized by four fused tooth plates. Its fused plates demonstrate the specialized biting apparatus found in part of the order.
Tetrodotoxin: Tetrodotoxin is a potent neurotoxin that blocks voltage-gated sodium channels in nerves and muscles. Some pufferfish accumulate this toxin, creating major food-safety risks.
Lophiiformes: Lophiiformes is an order of ray-finned fishes that includes anglerfishes, many adapted to ambush predation. Anglerfishes show a different body-plan specialization from the jaw and armor traits common in tetraodontiforms.
Tetraodontiform fossil record: The tetraodontiform fossil record consists of fossil remains documenting the order’s evolutionary history. Fossils reveal that distinctive tetraodontiform body plans appeared deep in the Cenozoic.
Teleost: Teleosts are the largest group of living ray-finned fishes, with mobile jaws and typically a flexible tail skeleton. Tetraodontiformes belongs to this major radiation of modern fishes.
Tetraodontiform jaw apparatus: The tetraodontiform jaw apparatus is a set of skeletal and muscular adaptations for forceful, precise biting. Jaw specializations let many members crush hard prey or shear food.
Fugu: Fugu is Japanese cuisine prepared from pufferfish by specially licensed chefs. Its preparation reflects the danger posed by toxins in some pufferfish tissues.
Perciformes: Perciformes is a traditional order of spiny-rayed fishes that includes many familiar marine and freshwater groups. Older classifications placed some tetraodontiform relatives among broadly defined perciform fishes.
Eocene: The Eocene is a geological epoch spanning roughly 56 to 34 million years ago. Many early fossil representatives of modern tetraodontiform lineages date to this epoch.

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