Size and family
Porcupinefishes are medium-to-large fishes belonging to the family Diodontidae.
Porcupinefish
Porcupinefishes are medium-to-large fishes of the family Diodontidae found in shallow temperate and tropical seas worldwide.
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Last Updated Mar 9, 2026 · 2 sources
Species Guide
What to know about porcupinefish
A clean field guide focused on habitat, identification, behavior, and conservation context without burying the useful parts.
Porcupinefishes are medium-to-large fish belonging to the family Diodontidae in the order Tetraodontiformes. Common names include blowfishes, and sometimes balloonfishes and globefishes; they are also sometimes collectively called pufferfishes, though that name more commonly refers to the related family Tetraodontidae. The Diodontidae family includes about 18 species. Porcupinefishes occur in shallow, temperate, and tropical seas worldwide, and a few species are found much further offshore, where large schools of thousands of individuals can form.
The strongest linked planning options currently surface around destinations such as Hawaii Island Big Island Usa, Kauai Hawaii Usa and countries such as United States of America, Indonesia, Saudi Arabia for divers building trips around porcupinefish.
Identification
How to identify porcupinefish
The visual markers divers can use underwater, plus the species most likely to cause confusion.
Key identification markers
Taxonomic order
They are in the order Tetraodontiformes.
Common lookalikes
Tetraodontidae (pufferfishes)
Porcupinefishes are morphologically similar to and closely related to the Tetraodontidae, which are more commonly referred to as pufferfishes.
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Responsible Encounters
How to dive with porcupinefish
Conservation-minded guidance for divers who want the encounter without adding pressure.
Give porcupinefish space, avoid blocking the animal's path, and follow local site and operator rules for wildlife interactions with saltwater fishes.
Field Notes
Interesting things worth knowing
Useful species context that makes the encounter more meaningful once you are underwater.
Field notes
Common names vary
Porcupinefishes are also called blowfishes, balloonfishes, and globefishes, and are sometimes collectively called pufferfishes.
Number of species
The family Diodontidae comprises about 18 species.
Occasionally schooling offshore
A few species occur much further offshore and can form large schools of thousands of individuals.
Top Destinations
Top destinations to see porcupinefish
Destinations surfaced from the linked dive spots associated with this species.
Top Countries
Top countries for porcupinefish
The strongest country-level starting points currently linked to this species.
Top Dive Spots
Top dive spots for porcupinefish
Directly linked dive spots where this species already shows up in the planning data.
FAQ
Frequently asked questions
Clear planning and conservation answers written for search visibility and AI retrieval.
Research Sources
Porcupinefish information sources
Primary and credible references behind the field-guide and conservation claims on this page.
Sources 2Last Updated
Porcupinefish · Encyclopedia · Wikipedia
Primary wildlife guide source.
Porcupinefish · Encyclopedia · Britannica
Supporting wildlife source.
Related Species
More in Saltwater Fishes
Related species guides in the same encounter family.
