Freshwater Pufferfish (Dichotomyctere nigroviridis)

Family: Tetraodontidae

Freshwater Pufferfish — a Tetraodontidae from Indonesia, territorial and intelligent; personality exceeds its size. Reaches 12.8–18.7 cm; one per tank is the safe rule. 24–28 °C.

Care parameters

Water temperature
24–28 °C
pH
7.5–8.5
GH hardness
9–19 dGH
Adult length
12.8–18.7 cm
Minimum tank
420 L
Water layer
Middle to bottom
Difficulty
Moderate
Temperament
Territorial and intelligent; personality exceeds its size
Origin
Indonesia

Species overview

Dichotomyctere nigroviridis, a member of the family Tetraodontidae, comes from Indonesia, where it inhabits estuaries and brackish shallows. Territorial and intelligent; personality exceeds its size and mollusc-crusher — snails, shrimp and hard foods to wear the beak, it grows to 12.8–18.7 cm and adapts well to a properly set-up aquarium in the 24–28 °C range. In a community tank it pairs well with Fast robust fish too large to harass.

Native biotope

Habitat
Estuaries and brackish shallows
Flow
Still to gentle
Dissolved O₂
High oxygen appreciated

Aquascape & hardware

Substrate
Fine sand
Hardscape
Open sand with sparse decor
Plants
Sparse hardy plants

Temperament, diet & tankmates

Schooling
One per tank is the safe rule
Diet
Mollusc-crusher — snails, shrimp and hard foods to wear the beak
Recommended tankmates
  • Fast robust fish too large to harass — Only in the largest setups
Avoid keeping with
  • Invertebrates — Eaten like the snails they are

Breeding & notes

Sexual dimorphism
Unclear
Breeding method
No routine captive breeding; behaviour varies by species

Frequently asked questions

Is Freshwater Pufferfish easy to keep?

Difficulty: moderate. Territorial and intelligent; personality exceeds its size. One per tank is the safe rule.

What temperature and water chemistry does Freshwater Pufferfish need?

Aim for 24–28 °C. Stable warm range; 24–28 °C recorded range.

How big does Freshwater Pufferfish get, and what tank size?

Expect 12.8–18.7 cm as an adult, living middle to bottom. A 420 L tank or larger gives it room.

What does Freshwater Pufferfish eat?

Mollusc-crusher — snails, shrimp and hard foods to wear the beak. Feed two small meals a day rather than one large one.

Can Freshwater Pufferfish live with other fish?

Territorial and intelligent; personality exceeds its size. Recommended tankmates: Fast robust fish too large to harass — Only in the largest setups. Avoid Invertebrates — Eaten like the snails they are.

Where does Freshwater Pufferfish come from?

Native to Indonesia, where it lives in estuaries and brackish shallows. Still to gentle; High oxygen appreciated.

How does Freshwater Pufferfish breed?

No routine captive breeding; behaviour varies by species. Unclear.