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Figure eight puffer (Dichotomyctere ocellatus)
Photo: ColdmachineUK · CC BY 2.5 via Wikimedia Commons

Figure eight puffer

Dichotomyctere ocellatus · Tetraodontidae

Also known as Eyespot puffer

Intermediate

The most tank-friendly puffer: stays small, tolerates low-end brackish and full of personality.

Minimum tank
110 L
Temperature
24–28 °C
pH
7.5–8.2
Adult size
8 cm
Group size
1+
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Care requirements
Minimum tank volume
110 L
Temperature
24–28 °C
pH
7.5–8.2
Hardness
10–25 dGH
Lifespan
5–15 years
Diet
Carnivore — snails, shell-on shrimp, bloodworm; hard shells keep the teeth trimmed.
Care level
Intermediate
Origin & habitat
Native region
Southeast Asia, coastal rivers and estuaries
Water type
Brackish
Biotope
Tidal river mouths over sand and wood
Natural conditions
Specific gravity around 1.005–1.010; warm, hard, well-filtered water.
Behaviour & stocking
Temperament
Semi-aggressive
Minimum group
1 fish
Swims
All levels
Good tank mates
Bumblebee goby
Knight goby
Other figure eights in a large tank
Avoid
Long-finned fish
Shrimp
Guppies
Breeding & difficulty
Breeding difficulty
Advanced
Sexing
No reliable external difference.
Notes
Very rarely bred in captivity.
Common ailments
Overgrown teeth
Internal parasites from live food
Nitrate sensitivity

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