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About the Pea Puffer
The Pea Puffer, also known as the Dwarf Puffer, is the world's smallest pufferfish and one of the most charismatic freshwater fish available. Native to the slow-moving rivers, streams, and heavily vegetated waters of Kerala, India, this tiny species is famous for its curious personality, expressive eyes, and fascinating hunting behaviour.
Despite reaching only around 2.5 cm in length, Pea Puffers have enormous personalities. They actively explore every corner of the aquarium, recognise their owners, and often watch movement outside the tank with surprising intelligence. Their vibrant green body is covered with dark spots, providing excellent camouflage amongst aquatic plants.
Pea Puffers are best kept in heavily planted species-only aquariums or carefully selected community setups. While small, they can be territorial and may nip the fins of slow-moving fish. A densely planted aquarium with plenty of hiding places helps reduce aggression and allows natural territories to form.
As carnivores, they require a protein-rich diet of live and frozen foods including bloodworms, blackworms, daphnia, mosquito larvae, and small snails. Their unique personality, compact size, and interactive behaviour make them one of the most rewarding freshwater fish to keep.
Quick Care Guide
Scientific Name
Carinotetraodon travancoricus
Common Name
Pea Puffer
Origin
Kerala, India
Adult Size
2–2.5 cm
Temperament
Semi-aggressive and territorial
Diet
Carnivore
Minimum Tank Size
40 Litres (species aquarium)
Temperature
24–28°C
pH
6.5–7.5
Water Hardness
5–15 dGH
Difficulty
Intermediate
Lifespan
4–5 Years
Suitable For
Species aquariums and carefully selected community tanks
Frequently Asked Questions
Are Pea Puffers suitable for beginners?
They are best suited to aquarists with some experience, as they require specialised feeding and careful selection of tank mates.
What do Pea Puffers eat?
Pea Puffers thrive on frozen bloodworms, blackworms, mosquito larvae, brine shrimp, daphnia, and small pest snails. They generally do not thrive on dry foods alone.
Can Pea Puffers live with other fish?
They can, but tank mates must be chosen carefully. Fast-moving, non-aggressive species work best, while long-finned fish should be avoided.
Do Pea Puffers eat snails?
Yes. Small pest snails are a natural part of their diet and help keep their beak healthy.
Can Pea Puffers be kept together?
Yes. Groups can be successful in heavily planted aquariums with plenty of hiding places. Keeping one male with multiple females generally helps reduce territorial disputes.
Common Mistakes
Keeping them in bare aquariums
Pea Puffers require dense planting and plenty of cover to establish territories and reduce aggression.
Feeding only dry foods
A varied diet of live and frozen foods is essential for their long-term health.
Mixing with slow-moving or long-finned fish
They are known fin nippers and may harass species such as Bettas and fancy Guppies.
Underestimating their territorial behaviour
Despite their tiny size, Pea Puffers can be surprisingly assertive towards one another.
Ignoring water quality
Stable water conditions and regular maintenance are essential, as Pea Puffers are sensitive to poor water quality.
