
Cochin Puffer
Pao cochinchinensis
- Care level
- Intermediate
- Adult size
- 7 cm
- Minimum tank
- 40 litres
- Temperature
- 24–28 °C
Species profile
Carinotetraodon borneensis
Common names: Bornean Red-eye Puffer

A small, rarely imported puffer from Sarawak in Borneo. It is less aggressive than some relatives, but males still claim territory.
A small red-eyed puffer. Males are greyish and faintly mottled, with the body colour merging gradually into a whitish belly.
Sometimes sold mixed with the Striped Redeye Puffer, which has distinct dark bars in both sexes. This species does not.
Males are greyish and faintly mottled, with no sharp line between the flank and the belly. Females look different and are plainer.
Probably lives in sluggish edge water among plants, so use dense planting, wood and gentle flow.
Less aggressive than some of its genus, but still a hunter.
Only loosely social. A group can work with enough cover and space.
Males in particular tend to hold territories.
Keep it alone or with peaceful schooling fish of a safe size. It may nip long fins, and it will eat shrimp and snails.
Soft to moderately hard freshwater. Few water measurements exist for its habitat.
A carnivore. Feed live and frozen meaty foods, with regular snails.
Check the beak regularly. If it overgrows, the fish can no longer eat and the teeth may need to be trimmed by someone experienced.
No aquarium breeding has been recorded. The related Redeye Puffer scatters eggs among plants, and the male guards them.
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