The Green Spotted Puffer is a highly intelligent but notoriously aggressive fish. While frequently (and incorrectly) sold as a freshwater species, they strictly require brackish water that increases in salinity as they mature, eventually needing high-brackish or full marine conditions as adults. They have beak-like teeth that grow continuously and must be worn down by a diet of hard-shelled foods. Best kept entirely alone.
Green Spotted Puffer (Brackish) At a Glance
Green Spotted Puffer (Brackish) Tank Requirements
Will Green Spotted Puffer (Brackish) fit in your tank?
Care guides tell you what Green Spotted Puffer (Brackish) needs, the next question is whether your tank can safely provide it. Test Green Spotted Puffer (Brackish) against your tank size, maintenance needs, and the fish you already keep before you buy.
Useful setup supplies
We may earn from qualifying purchases
Green Spotted Puffer (Brackish) Water Parameters
Water care products
We may earn from qualifying purchases
Green Spotted Puffer (Brackish) Temperament & Compatibility
Green Spotted Puffer (Brackish) Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Standard
The standard Green Spotted Puffer. Must be kept solitary due to extreme aggression and fin-nipping behavior. Requires a specialized diet of snails, clams, and crustaceans to prevent fatal tooth overgrowth.
Same care requirements as the base species
Also known as: GSP
Green Spotted Puffer (Brackish) Care Guide Summary
The Green Spotted Puffer (Brackish), scientifically known as Dichotomyctere nigroviridis, 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 mid-level and bottom zones of the aquarium and produces a extreme level of biological waste.
To thrive, the Green Spotted Puffer (Brackish) requires a brackish required aquarium with a minimum volume of 114 litres and a tank length of at least 80 cm. Water temperature should be maintained between 24°C and 28°C, with a pH range of 7.5–8.5 and a general hardness of 12–30 dGH. A moderate water flow is preferred.
Due to its specialist needs, the Green Spotted Puffer (Brackish) is best suited for fishkeepers who can provide a carefully planned setup. The Green Spotted Puffer (Brackish) is typically available in one standard form.
Green Spotted Puffer (Brackish) Habitat Setup
When setting up an aquarium for the Green Spotted Puffer (Brackish), a moderate water flow best suits their natural preferences. Because this species occupies the mid-level and bottom zones, the aquarium layout should prioritise open swimming space in the centre of the tank for free movement and sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include a sand substrate to accommodate their sifting behaviour and shells for breeding and shelter.
Green Spotted Puffer (Brackish) Compatibility Notes
Classified as highly aggressive, the Green Spotted Puffer (Brackish) is best housed alone, as they do not tolerate others of their kind in confined spaces. When choosing tankmates, avoid housing with slow-moving or long-finned species that may become targets for fin nipping, 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 territorial behaviour may cause issues if hiding spots or floor space are limited. Selecting tankmates that favour different water layers from the mid-level and bottom zones can help reduce competition and territorial overlap.
Green Spotted Puffer (Brackish) Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Green Spotted Puffer (Brackish).
30 Gallon Breeder
40 Gallon Breeder
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
Show 11 more tank sizes
Green Spotted Puffer (Brackish) Feeding & Diet Considerations
The Green Spotted Puffer (Brackish) 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.
Feeding products
We may earn from qualifying purchases
.webp?2026-04-25T14%3A35%3A38.022Z)
Frequently Asked Questions About Green Spotted Puffer (Brackish)
How big does Green Spotted Puffer (Brackish) get?
Green Spotted Puffer (Brackish) (Dichotomyctere nigroviridis) 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 Green Spotted Puffer (Brackish) need?
A minimum aquarium volume of 114 litres and a tank length of at least 80 cm are recommended for Green Spotted Puffer (Brackish). This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Green Spotted Puffer (Brackish) need?
Green Spotted Puffer (Brackish) thrives in brackish required conditions with a temperature range of 24–28°C, a pH between 7.5 and 8.5, and a general hardness of 12–30 dGH. A moderate water flow is preferred.
Is Green Spotted Puffer (Brackish) peaceful or aggressive?
Green Spotted Puffer (Brackish) is classified as highly aggressive with an aggression score of 9 out of 10. Careful tankmate selection is essential to avoid conflict.
Can Green Spotted Puffer (Brackish) live with others of its kind?
No. Only one Green Spotted Puffer (Brackish) should be kept per tank. Keeping multiples in the same aquarium typically results in aggression and stress.
Is Green Spotted Puffer (Brackish) safe with shrimp?
No. Green Spotted Puffer (Brackish) 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 Green Spotted Puffer (Brackish) eat snails?
Yes. Green Spotted Puffer (Brackish) 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 Green Spotted Puffer (Brackish) have any special tank requirements?
Yes. Green Spotted Puffer (Brackish) benefits from sand (sifters) and shells (breeding/hiding) in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Plants That Suit Green Spotted Puffer (Brackish)
These plants pair well with Green Spotted Puffer (Brackish) based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
Dwarf Sagittaria
Sagittaria subulata
Italian Val
Vallisneria spiralis
Java Fern
Leptochilus pteropus
Jungle Val
Vallisneria americana
Lemon Bacopa
Bacopa caroliniana
Micro Sword
Lilaeopsis brasiliensis
Fish Similar to Green Spotted Puffer (Brackish)
Figure 8 Puffer (Brackish)
Dichotomyctere ocellatus
A small, highly intelligent, and interactive pufferfish known for the distinctive figure-eight pattern on its back. While often sold as freshwater fish, they strictly require a low-end brackish environment (Specific Gravity 1.005-1.008) for long-term health and a full lifespan. They are aggressive fin-nippers and strict carnivores that require hard-shelled foods (like snails) to keep their continuously growing teeth trimmed.
Ceylon Puffer (Brackish)
Dichotomyctere fluviatilis
The Ceylon Puffer (often sold as the Topaz Puffer) is a highly interactive but aggressive brackish water species. Like many puffers, they require hard, crunchy foods (like snails and crabs) to keep their continuously growing teeth ground down. Often falsely sold as freshwater fish, they strictly require brackish water, with adults thriving in high-end brackish or full marine conditions. They are notorious fin-nippers and are best kept in a species-only solitary setup.
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.
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.
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.
Arrowhead Puffer
Pao suvattii
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.