Product Details

Red-tailed Red-eye Puffer – Carinotetraodon irrubesco

The Red-tailed Red-eye Puffer is a small but highly characterful freshwater puffer with bright eyes, a compact body and striking red colour in mature males. Also sold as the Red-eye Red-tail Puffer, Red-tailed Dwarf Puffer or Red-eye Puffer, this species is best suited to aquarists who understand puffer behaviour, specialist feeding and careful compatibility. It is not a standard community fish, but in a mature, well-planted aquarium it can be an intelligent, fascinating and rewarding species to keep.

Key Identification:

Common Name: Red-tailed Red-eye Puffer
Other Names: Red-eye Red-tail Puffer, Red-tailed Dwarf Puffer, Red-eye Puffer
Scientific Name: Carinotetraodon irrubesco
Fish Type: Freshwater Pufferfish
Water Type: Freshwater

Natural Range & Habitat:

Carinotetraodon irrubesco is native to Indonesia, where it occurs in soft, acidic freshwater habitats with plenty of submerged cover. Natural environments are typically slow-moving, shaded and plant-rich, with areas of roots, leaf litter, aquatic vegetation and quiet margins.

In the aquarium, this species should be treated as a true freshwater puffer rather than a brackish fish. It does best in a mature, heavily planted setup with driftwood, floating plants, shaded retreats and broken lines of sight.

Appearance & Adult Size:

Red-tailed Red-eye Puffers have a rounded body, mobile eyes and a beak-like mouth typical of freshwater puffers. Mature males are usually the most colourful, often showing red in the tail and dorsal fin, with some individuals developing additional red or orange tones across the body.

Females are generally more muted, often with a mottled or patterned body and less intense fin colour. Adults usually reach around 4–5 cm, making them small in size but still specialist in temperament and care.

Aquarium Suitability:

This species is best suited to a mature species aquarium or a carefully planned specialist setup. Dense planting, driftwood, leaf litter, caves, floating plants and shaded areas are all useful for reducing stress and breaking up territories.

Although small, the Red-tailed Red-eye Puffer can nip fins, harass slow fish and eat small invertebrates. It should not be added to a general community aquarium without careful planning. It is usually safest as a single specimen, a pair or a carefully managed harem-style group in a suitably decorated tank.

Recommended Aquarium Size:

A practical minimum is 60 litres for a single specimen, with 90 litres or more preferred for a pair or small group. Larger aquariums are strongly recommended if keeping more than one, as individual temperament can vary.

If attempting a group, provide dense cover and avoid keeping multiple males together unless the aquarium is very large and heavily structured.

Water Conditions:

Temperature: 24–28°C
pH: 5.5–7.2
Hardness: Soft to moderately hard
Additional Notes: Stable, clean water is essential. Provide gentle to moderate filtration, low to moderate flow and plenty of cover. Avoid poor water quality, unstable new aquariums and harsh open setups with no hiding places.

Temperament & Tank Mates:

Aquarium Category: Semi-Aggressive

Red-tailed Red-eye Puffers are intelligent, territorial and variable in temperament. Some individuals tolerate carefully chosen fast midwater fish, while others are best kept alone or in a species setup.

If tank mates are attempted, choose quick, peaceful fish without long fins and avoid anything small enough to be bullied or bitten. Avoid long-finned fish, slow bottom dwellers, ornamental shrimp, pet snails, delicate species and aggressive fish that may stress or injure the puffer. Shrimp and snails are likely to be eaten or damaged.

Feeding:

This is a carnivorous micro-predator that needs a varied meaty diet. Offer frozen or live foods such as bloodworm, brineshrimp, mysis, daphnia, mosquito larvae, chopped mussel, chopped prawn and small earthworm pieces.

Small pest snails can be useful for enrichment and natural feeding behaviour, but they should not be the only food. Many puffers ignore dry flakes and may only accept pellets after training, so frozen and live foods should be expected as the main diet. Remove uneaten food promptly to protect water quality.

Behaviour in the Aquarium:

Red-tailed Red-eye Puffers are curious, observant fish that often patrol chosen areas, investigate the aquarist and explore plants, wood and shaded cover. They may hide when newly introduced but often become bolder once settled.

They are not constant open-water swimmers. Instead, they move deliberately through cover, hover, inspect surfaces and defend favoured areas. Individual behaviour varies greatly, so any fin-nipping, chasing or food aggression should be taken seriously.

Care Notes:

This is a specialist freshwater puffer and not a beginner community fish. Provide a mature aquarium, excellent water quality, dense cover and a varied frozen or live diet.

Do not keep with ornamental shrimp or snails unless they are intended as food. Monitor body condition, feeding response and aggression carefully. Avoid impulse purchases for small mixed community tanks, and do not keep in brackish water.

Recommended For:

Experienced

Availability:

Rare to occasional / Usually wild-caught or specialist import

Image Disclaimer:

All images are a visual representation of the fish you will receive, made to be as accurate as possible. Natural variation in size, colour, pattern, body tone and markings can occur between individual fish.