Long-spine Porcupinefish Diodon holocanthus

Long-spine Porcupinefish

  Tropical reef fish

Long-spine Porcupinefish Diodon holocanthus

Identity card

Long-spine Porcupinefish

Scientific name:
Diodon holocanthus
Family:
Diodontidae
Class:
Actinopterygii
Phylum:
Chordata
Year of description:
Linnaeus, 1758
IUCN Status:
Least Concern
Distribution:

Circumtropical zone and warm temperate waters.

Habitat:

Down to a depth of 100 metres

Size:

The Long-spine Porcupinefish measures between 30 and 50 cm.

Diet:

Hard-shelled molluscs and crustaceans

Long-spine Porcupinefish Diodon holocanthus
 

This fish can be toxic to humans, it transmits ciguatera

The long-spine porcupinefish is used in Chinese medicine.
It feeds on hard-shelled molluscs and crustaceans that it crushes with its teeth fused into a powerful beak.

Where is the animal to be found?

The long-spine porcupinefish lives mainly at depths down to 100 metres, in various habitats such as reefs, sandy seabeds and seagrass beds.

How can it be recognised?

The long-spine porcupinefish can inflate its body with water and deploy its spines. It then turns into a bristly ball when it feels threatened, to protect itself from potential predators. It measures between 30 and 50 cm.

What is distinctive about it?

For long-spine porcupinefish, external breeding takes place after the males have gently pushed the females towards the surface of the water. The eggs are spherical and float. They hatch four days after fertilisation.

Where can I find it at Nausicaá?

Des rivages et des Hommes

Tropical reef fish

The Ocean Mag

Browse through our Ocean Mag

In the spotlight

Un retour à l'océan pour Ripple, la tortue caouanne

La tortue caouanne, recueillie par Nausicaá en janvier 2026 retrouve l'océan après un séjour au centre de soins de l'Aquarium La Rochelle.

Article

Births, breeding and transfers: discover the ‘new arrivals’ at Nausicaá

From egg collection to transfer to the tanks, breeding and rearing at Nausicaá.

Article

Baby Banggai cardinalfish in the lagoon's reef flat!

Young cardinalfish are hiding among the spines of a sea urchin in the ‘Tropical Escape’ exhibition.