Porcupine Puffer Fish Care and Tank Setup

$87.14

The Porcupine Puffer (Diodon holocanthus), also known as the Long-spine Porcupinefish or Balloonfish, is an intelligent and charismatic marine fish famous for its expressive, interactive personality. As a nocturnal predator that grows up to 50 cm, it thrives in large marine setups featuring ample rockwork for daytime shelter alongside wide-open swimming areas.

Due to its substantial size and messy feeding behavior, a spacious aquarium of at least 681 L with robust filtration and protein skimming is essential. Its continuously growing beak requires a staple diet of hard-shelled meaty foods, making it suitable exclusively for fish-only systems with large, compatible tank mates.

Key Features

Scientific Name	Diodon holocanthus
Common Names	Porcupine Puffer, Balloonfish, Long-spine Porcupinefish
Origin	Circumtropical (worldwide)
Max Size	Up to 50 cm
Temperament	Semi-Aggressive (predatory)
Diet	Carnivore (Must include hard-shelled food)
Minimum Tank Size	681+ L
Reef Safe	No
System Type	Fish Only With Live Rock (FOWLR)

Highlights

Scientific Name: Diodon holocanthus
Common Names: Porcupine Puffer, Balloonfish, Long-spine Porcupinefish
Origin: Circumtropical (worldwide)
Max Size: Up to 20 inches (50 cm)
Temperament: Semi-Aggressive (predatory)
Diet: Carnivore (Must include hard-shelled food)
Minimum Tank Size: 180+ Gallons

Compatibility

Not reef safe. This species preys on invertebrates and should be housed in a Fish Only With Live Rock (FOWLR) environment alongside large, robust tank mates such as large Angelfish or Tangs that can tolerate occasional nipping.

Frequently asked questions

What size aquarium is required for a Porcupine Puffer?

A minimum tank size of 681 to 757 liters (180 to 200 gallons) is required to accommodate its adult size and high bio-load, supported by strong filtration and a protein skimmer.

What diet does the Porcupine Puffer need?

It requires a carnivorous diet rich in hard-shelled meaty foods, such as whole clams, mussels, and shell-on krill, to naturally grind down its continuously growing beak.

Is the Porcupine Puffer safe for reef tanks?

No, this species is a predatory hunter of invertebrates and is not safe for reef aquariums. It is best maintained in a Fish Only With Live Rock (FOWLR) system.

What defense mechanism does this pufferfish use?

When threatened, it inflates its body with water to nearly double its size, extending its long spines, and its flesh contains toxic tetrodotoxin.

Important Fulfillment Information

Fish and corals ship Monday through Thursday. Not all fish are sexed. If so it will specify.

Once your order ships, you will receive an email with your tracking number. Refunds are always issued for any fish not shipped.

PlantedPlus operates as a collective of trusted freshwater and saltwater importers. This policy allows us to prioritize animal welfare while maintaining reliable service for our hobbyists.

Shipping Cost Disclosure

To help keep ordering live fish online affordable, Planted Plus subsidizes a portion of shipping costs. Because these costs are incurred regardless of order completion, shipping charges are non-refundable.

Porcupine Puffer (Diodon Holocanthus)