Tetraodon: Greek, tetra = four + Greek, odous = teeth
Using around 25gm (one tablespoon) of (marine) salt per gallon should be added to their water, green puffers are essentially a brackish water species more so as they mature. If raised in fresh water there is an increased risk of a fungal infection. As with most puffers they have little tolerance of poor water quality and as such particular attention should be paid to regular water changes in order to keep nitrogenous waste as low as possible.
Sans makes a good substrate along with a few rounded stones for decor. Live plants are unlikely to thrive in brackish water but plastic plants will offer some cover for the fish and help it to feel confident.
In captivity they will accept a range of live and frozen food. Snails, shellfish, prawns, earthworms, crickets, meal worms, blood worms, lance fish and krill will all make an acceptable diet.
Aggressive and better kept alone. Green puffers will fight among themselves, occasionally to the death. Small juveniles are more tolerant but they become increasingly aggressive as they grow. Part of their natural diet is the fins and scales of other fish which says it all really.
There are no known external differences between the sexes.
There are few details but green puffers have been bred in captivity. The fish were kept in brackish water and the eggs were deposited on a rounded stone. Both parents exhibited brood care.
Tetraodon fluviatilis is a wide ranging common species with no major threats.
The flesh of this species is toxic if eaten.
pH: 7.8 - 8.4
dGH: 15 -25
SG: 1.005 - 1.01
Temperature: 24 - 28°C (76 - 82°F)
Size: 17cm (7in)
Min tank size: 150 litres
Difficulty level: Moderate
Aquarium type: Specimen
Swimming level: All levels
Origin: India, Sri Lanka, Bangladesh, Myanmar and Borneo
Habitat: Slow moving rivers, estuaries. Fresh and brackish water.
Species: T. fluviatilis, Hamilton 1822
Other common names:
Dichotomycterus rangoonensis dorsovittatus,