Caribbean Balloon Pufferfish (Diodon holocanthus)
A fascinating and playful addition to large saltwater aquariums, the Balloon Pufferfish is known for its unique ability to inflate when threatened, spiky texture, and expressive face. This species brings personality and a true Caribbean reef atmosphere to your tank.
Native to Caribbean reefs, lagoons, and seagrass beds, these fish thrive in spacious tanks with plenty of rockwork and hiding places. They are generally peaceful but may nip at very small or slow-moving invertebrates, making them best suited for tanks with larger, active invertebrates.
Hardy and adaptable to captivity, the Balloon Pufferfish readily accepts a carnivorous diet of meaty frozen foods such as shrimp, squid, clams, and chopped seafood. A balanced, protein-rich diet ensures optimal health and behavior.
| Specifications |
|---|
| Species: Diodon holocanthus |
| Size: Up to 10 inches (25 cm) |
| Water Temperature: 75–82°F (24–28°C) |
| Water pH: 8.1–8.4 |
| Water Hardness: 8–12 dGH |
| Compatibility: Peaceful with larger fish; avoid small invertebrates |
FAQ
What is the typical tank size required for a Balloon Pufferfish?
A minimum tank size of 100 gallons is recommended to provide adequate swimming space and hiding areas.
Does the Balloon Pufferfish require special lighting?
No, it does not require special lighting. Standard reef lighting is sufficient for its well-being.
Can Balloon Pufferfish be kept with corals?
Please contact customer service




Maria Hemmings –
The Balloon Pufferfish is a delightful addition to my 120-gallon reef tank. It inflates when startled and looks very expressive. I feed it frozen shrimp and squid regularly. It’s peaceful and doesn’t bother my corals or other fish.
Adrian May –
Great fish with a unique appearance. It’s active and curious. I made sure to include plenty of rockwork for shelter. It’s not aggressive, but I do avoid keeping it with very small invertebrates.
Rose Cameron –
Very easy to care for. I’ve had it for six months and it’s thriving. The inflation behavior is entertaining and adds a lot of character to the tank.