A highly predatory freshwater pufferfish native to the Mekong basin. Named for its V-shaped, flattened head, it is a specialized ambush predator that buries itself in sand with only its eyes and upwards-facing mouth exposed. It is notoriously aggressive and will consume or fatally bite any tankmate, regardless of size. Must be kept strictly solitary.
Arrowhead Puffer At a Glance
Arrowhead Puffer Tank Requirements
Will Arrowhead Puffer fit in your tank?
Care guides tell you what Arrowhead Puffer needs, the next question is whether your tank can safely provide it. Test Arrowhead Puffer against your tank size, maintenance needs, and the fish you already keep before you buy.
Arrowhead Puffer Water Parameters
Arrowhead Puffer Temperament & Compatibility
Arrowhead Puffer Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Standard
The standard commercial form. It absolutely requires a soft sand substrate (at least 2-3 inches deep) to exhibit natural burrowing behavior and prevent abrasions. It is completely intolerant of conspecifics and other fish species.
Same care requirements as the base species
Also known as: Wild Type
Arrowhead Puffer Care Guide Summary
The Arrowhead Puffer, scientifically known as Pao suvattii, belongs to the Puffers family group. Adults reach a maximum size of approximately 15 cm and have a globular body shape with a moderate growth rate. Classified as highly aggressive, this species primarily occupies the bottom zone of the aquarium and produces a high level of biological waste.
To thrive, the Arrowhead Puffer requires a freshwater only aquarium with a minimum volume of 114 litres and a tank length of at least 75 cm. Water temperature should be maintained between 22°C and 28°C, with a pH range of 6.5–7.5 and a general hardness of 5–15 dGH. A moderate water flow is preferred.
Due to its specialist needs, the Arrowhead Puffer is best suited for fishkeepers who can provide a carefully planned setup. The Arrowhead Puffer is typically available in one standard form.
Arrowhead Puffer Habitat Setup
When setting up an aquarium for the Arrowhead Puffer, a moderate water flow best suits their natural preferences. Because this species occupies the bottom zone, the aquarium layout should prioritise sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include a sand substrate to accommodate their sifting behaviour. Keepers should note that expect substrate disturbance, so lightweight décor should be secured.
Arrowhead Puffer Compatibility Notes
Classified as highly aggressive, the Arrowhead Puffer is best housed alone, as they do not tolerate others of their kind in confined spaces. When choosing tankmates, any fish small enough to fit in its mouth will likely be eaten, ornamental shrimp are not safe companions, snails will be treated as food rather than tankmates, conspecific aggression can be intense, especially in smaller tanks, and boisterous or fast-moving tankmates may cause this species undue stress. Selecting tankmates that favour different water layers from the bottom zone can help reduce competition and territorial overlap.
Who Arrowhead Puffer Is Actually For
Arrowhead Puffer is best for a fishkeeper who expects a species with attitude and plans the tank around that behavior and can provide someone who understands its individual space requirements. It makes the most sense for a hobbyist who will actually build around its needs, especially sand.
The most common mistake is treating Arrowhead Puffer like any other community fish and skipping the soft sand it needs to forage safely. Another frequent problem is forcing it into an over-busy community when it would do better with more room or more deliberate tankmate choices.
Arrowhead Puffer Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Arrowhead Puffer.
30 Gallon Breeder
36 Gallon Bowfront
40 Gallon Breeder
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
Show 12 more tank sizes
Arrowhead Puffer Feeding & Diet Considerations
The Arrowhead Puffer is a predatory species that will readily consume small fish, so nano or bite-sized tankmates should be avoided, will hunt and eat ornamental shrimp, making it unsuitable for shrimp-focused setups, and actively feeds on snails and can be used as a natural snail population control.
Frequently Asked Questions About Arrowhead Puffer
How big does Arrowhead Puffer get?
Arrowhead Puffer (Pao suvattii) typically reaches a maximum adult size of approximately 15 cm. They have a globular body shape and a moderate growth rate.
What tank size does Arrowhead Puffer need?
A minimum aquarium volume of 114 litres and a tank length of at least 75 cm are recommended for Arrowhead Puffer. This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Arrowhead Puffer need?
Arrowhead Puffer thrives in freshwater only conditions with a temperature range of 22–28°C, a pH between 6.5 and 7.5, and a general hardness of 5–15 dGH. A moderate water flow is preferred.
Is Arrowhead Puffer peaceful or aggressive?
Arrowhead Puffer is classified as highly aggressive with an aggression score of 10 out of 10. Careful tankmate selection is essential to avoid conflict.
Can Arrowhead Puffer live with others of its kind?
No. Only one Arrowhead Puffer should be kept per tank. Keeping multiples in the same aquarium typically results in aggression and stress.
Is Arrowhead Puffer safe with shrimp?
No. Arrowhead Puffer is known to eat ornamental shrimp and is not recommended for shrimp tanks. Even larger shrimp species like Amano Shrimp may be at risk.
Will Arrowhead Puffer eat snails?
Yes. Arrowhead Puffer actively feeds on snails. While this can be useful for controlling pest snail populations, it means decorative snails should not be housed with this species.
Does Arrowhead Puffer have any special tank requirements?
Yes. Arrowhead Puffer benefits from sand (sifters) in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Useful setup supplies
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Guidarium Editorial Desk
Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.
- Last reviewed
- April 29, 2026
- Last updated
- April 29, 2026
- Issues or corrections?
- Contact the editorial team
Plants That Suit Arrowhead Puffer
These plants pair well with Arrowhead Puffer based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
Afzel's Anubias
Anubias afzelii
Anubias Barteri
Anubias barteri
Belinda's Buce
Bucephalandra belindae
Buce Motleyana
Bucephalandra motleyana
Congo Anubias
Anubias heterophylla
Crepidomanes Fern
Crepidomanes auriculatum
Fish Similar to Arrowhead Puffer
Congo Puffer (Potato Puffer)
Tetraodon miurus
An ambush predator native to the Congo River basin. Affectionately known as the 'Potato Puffer' due to its lumpy, inactive appearance when buried. It requires deep, soft sand to bury itself and wait for prey. It is highly aggressive, strictly carnivorous, and must be kept solitary as it will bite or consume almost any other fish.
Brown Puffer
Pao turgidus
A heavily built, strictly freshwater pufferfish native to the Mekong basin in Southeast Asia. Often sold as part of the 'Target Puffer' complex, the Brown Puffer is a notorious ambush predator. They spend much of their time lurking among plants or partially buried in the substrate waiting for prey. They are highly aggressive, strictly solitary, and possess a sharp beak capable of crushing snails and fatally injuring tank mates.
Abei Puffer
Pao abei
A highly intelligent, interactive, and aggressive freshwater pufferfish native to the Mekong basin. They feature an earthy base color speckled with bright orange or pale spots. As true ambush predators and molluscivores, they require hard-shelled foods like snails and crustaceans to naturally file down their ever-growing teeth. Due to their extreme territoriality and formidable bite, they are widely considered a 'wet pet' and must be kept strictly alone.
Fahaka Puffer
Tetraodon lineatus
A massive, highly intelligent, and extremely aggressive freshwater pufferfish native to the Nile, Senegal, and Niger rivers. Often referred to as 'water dogs' due to their owner recognition and begging behavior. They are strictly solitary pets that will relentlessly attack and kill any tank mates. They require a diet of hard-shelled invertebrates to keep their ever-growing teeth trimmed.
Red Tailed Redeye Puffer
Carinotetraodon irrubesco
A small, true freshwater pufferfish native to the river basins of Indonesia. Known for their striking red eyes and highly inquisitive nature. While considered one of the more 'peaceful' Carinotetraodon species, they are still notorious fin-nippers and specialized predators of snails and dwarf shrimp. They require a heavily planted tank to break lines of sight.
Mbu Puffer
Tetraodon mbu
The largest freshwater pufferfish in the world, originating from the Congo River. Known for their 'puppy-like' intelligence and personality, they recognize owners and interact with them. However, they grow to massive sizes and possess a beak capable of crushing hard-shelled invertebrates. Unlike many puffers, they are true freshwater fish and do not need salt. They require massive filtration and a diet of hard foods (clams, snails) to keep their teeth trimmed.