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From The Aquarium Wiki

Diodontidae, or Porcupinefish, belong to the order Tetraodontiformes. They are sometimes confused with Pufferfish. Porcupinefish are closely related to Pufferfish but Porcupinefish have spines on their body. There are 22 known species in this family.

	Common name	Difficulty	Maximum Size	Minimum Tank Size
Diodon holacanthus	Porcupine Puffer Fish Balloon Porcupine Fish Spiny Puffer Long-Spined Porcupinefish Freckled Porcupinefish Bloat	Challenging	1919 in48.26 cm	100100 gal378.541 liters 378,541.178 mL