Red-tailed Red-eye Puffer – Carinotetraodon irrubesco

Product Details

Red-tailed Red-eye Puffer – Carinotetraodon irrubesco

The Red-tailed Red-eye Puffer, Carinotetraodon irrubesco, is a small but highly characterful freshwater puffer with bright eyes, a compact body and attractive red colouration in mature males. Also sold as the Red-eye Red-tail Puffer, Red-tailed Dwarf Puffer or sometimes incorrectly as a Red Billed Puffer, this is a specialist species for aquarists who understand puffer behaviour, feeding and compatibility. It is not a general community fish, but in the right 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 Billed 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 is associated with slow-moving freshwater habitats, often in soft, acidic, tannin-stained water with plenty of submerged cover. Its natural environment may include shaded forest streams, quiet margins, leaf litter, roots, aquatic vegetation and areas with low to moderate flow. In the aquarium, it should be treated as a true freshwater puffer that prefers a mature, planted, sheltered setup rather than brackish water or a fast-flowing community tank.

Appearance & Adult Size:
This species has the rounded body shape, mobile eyes and beak-like mouth typical of small puffers. Mature males are especially attractive, often showing a reddish tail and stronger red or orange tones, while females are usually more muted and may display a patterned or mottled body. The eyes are prominent and expressive, giving the fish much of its appeal. Adults usually reach around 4–5 cm, making it small in length but still demanding in care and temperament.

Aquarium Suitability:
The Red-tailed Red-eye Puffer is best suited to a mature species aquarium or a carefully planned specialist setup with dense planting, driftwood, leaf litter, shaded retreats and broken lines of sight. It is a freshwater puffer, not a brackish species. Despite its small size, it can nip fins, harass slow fish and may view small invertebrates as food. It is best kept by aquarists prepared to provide a varied meaty diet and monitor behaviour closely.

Recommended Aquarium Size:
A practical minimum aquarium size is around 60 litres for a single specimen, with 90 litres or more preferred for a pair or carefully managed small group. Larger aquariums with heavy planting and many visual barriers are strongly recommended if keeping more than one, as individual temperaments vary.

Water Conditions:                                                                                    Temperature: 24–28°C
pH: 5.5–7.2
Hardness: Soft to moderately hard
Additional Notes: Keep water clean, stable and well filtered, but avoid overpowering flow. This species appreciates cover, subdued lighting and mature aquarium conditions. It is sensitive to poor water quality and should not be added to brand-new tanks.

Temperament & Tank Mates:
Aquarium Category:
Semi-Aggressive

Red-tailed Red-eye Puffers are intelligent, territorial and variable in temperament. Some individuals tolerate fast, peaceful midwater fish, while others are best kept alone. Suitable tank mates, if attempted, should be quick, non-aggressive fish that do not have flowing fins and are not small enough to be bullied or bitten. Avoid long-finned fish, slow bottom dwellers, shrimp, snails kept as pets, delicate species and any fish that may compete heavily for food. This puffer is safest as a single specimen or in a species setup with careful observation.

Feeding:
This is a carnivorous micro-predator that needs a varied diet of meaty foods. Offer frozen or live bloodworm, brineshrimp, mysis, daphnia, mosquito larvae, chopped mussel, chopped prawn and small earthworm pieces. Small pest snails are useful for enrichment and natural feeding behaviour, though they should not be the only food. Many puffers ignore dry flakes and may only accept pellets after training, so do not rely on dry food as the staple 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 their chosen territory, investigate the aquarist and explore plants, wood and shaded areas. They may hide when newly introduced but usually become bolder once settled. They are not constant open-water swimmers; they prefer a complex aquarium with cover and resting places. Individual behaviour varies greatly, so any aggression, fin-nipping or food competition should be taken seriously.

Care Notes:
This is a specialist freshwater puffer, 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 teeth and feeding condition, although this species does not require hard-shelled foods as heavily as some larger puffers. Avoid impulse purchases for small mixed community tanks.

Recommended For:
Experienced

Availability:
Rare to occasional; usually wild-caught or specialist imported.

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 and markings can occur between individual fish.