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Green spotted puffer (Dichotomyctere nigroviridis)
Photo: Mattia Nocciola · CC BY-SA 4.0 via Wikimedia Commons

Green spotted puffer

Dichotomyctere nigroviridis · Tetraodontidae

Also known as GSP, Ceylon puffer

Advanced

Sold as a freshwater fish and constantly killed by it — an adult needs near-marine salinity.

In short: A green spotted puffer needs at least 210 L (55 US gal), water at 24–28 °C (75–82 °F) and pH 7.8–8.4. It is aggressive, usually kept singly, and rated advanced to keep.

Updated

Minimum tank
210 L (55 US gal)
Temperature
24–28 °C (75–82 °F)
pH
7.8–8.4
Adult size
15 cm (5.9 in)
Group size
1+

Care requirements

Minimum tank volume
210 L (55 US gal)
Temperature
24–28 °C (75–82 °F)
pH
7.8–8.4
Hardness
12–30 dGH
Lifespan
10–15 years
Diet
Carnivore — snails, clam, shell-on shrimp, krill.
Care level
Advanced

Origin & habitat

Native region
South and Southeast Asian estuaries including India
Water type
Brackish
Biotope
Estuaries and mangrove channels
Natural conditions
Raise from around 1.005 as a juvenile to 1.018–1.022 as an adult.

Behaviour & stocking

Temperament
Aggressive
Minimum group
1 fish
Swims
All levels
Good tank mates
Kept alone
Robust brackish gobies in very large tanks
Avoid
Any tank mate it can bite
Shrimp
Community fish

Breeding & difficulty

Breeding difficulty
Advanced
Sexing
Not visually sexable.
Notes
Not bred in home aquaria.
Common ailments
Overgrown teeth
Wasting from wrong salinity
Internal parasites
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