Red Tailed Redeye Puffer
Carinotetraodon irrubesco
A small, true freshwater pufferfish native to the river basins of Indonesia. Known for their striking red eyes and highly inquisitive nature. While considered one of the more 'peaceful' Carinotetraodon species, they are still notorious fin-nippers and specialized predators of snails and dwarf shrimp. They require a heavily planted tank to break lines of sight.
Red Tailed Redeye Puffer At a Glance
Red Tailed Redeye Puffer Tank Requirements
Will Red Tailed Redeye Puffer fit in your tank?
Care guides tell you what Red Tailed Redeye Puffer needs, the next question is whether your tank can safely provide it. Test Red Tailed Redeye Puffer against your tank size, maintenance needs, and the fish you already keep before you buy.
Red Tailed Redeye Puffer Water Parameters
Red Tailed Redeye Puffer Temperament & Compatibility
Red Tailed Redeye Puffer Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Male
Males are easily identified by their solid, brownish body and a distinct, vibrant red tail fin. They are fiercely intolerant of other males. Strictly one male per tank is recommended, though they can be kept with females (harems).
Differs in 3 traits from base species
Also known as: Male Irrubesco, Red Tail Puffer
Female
Females lack the bright red tail, instead displaying a mottled, reticulated pattern over their body and a distinctively patterned white belly. They are slightly less aggressive and multiple females can be kept together in a suitably sized, heavily planted tank.
Differs in 1 trait from base species
Also known as: Female Irrubesco, Mottled Puffer
Red Tailed Redeye Puffer Care Guide Summary
The Red Tailed Redeye Puffer, scientifically known as Carinotetraodon irrubesco, belongs to the Puffers family group. Adults reach a maximum size of approximately 4.5 cm and have a globular body shape with a moderate growth rate. Classified as semi-aggressive, this species primarily occupies the mid-level and bottom zones of the aquarium and produces a high level of biological waste.
To thrive, the Red Tailed Redeye Puffer requires a freshwater only aquarium with a minimum volume of 55 litres and a tank length of at least 60 cm. Water temperature should be maintained between 24°C and 28°C, with a pH range of 6–7.5 and a general hardness of 4–15 dGH. A low water flow is preferred.
The Red Tailed Redeye Puffer is a rewarding species to keep, provided its core environmental needs are met. This species is available in 2 varieties: Male and Female. Each may differ slightly in size, temperament, or care needs, so it is worth checking the specific requirements of the variety you plan to keep.
Red Tailed Redeye Puffer Habitat Setup
When setting up an aquarium for the Red Tailed Redeye Puffer, a low water flow best suits their natural preferences. Because this species occupies the mid-level and bottom zones, the aquarium layout should prioritise open swimming space in the centre of the tank for free movement and sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include leaf litter or blackwater tannins to replicate their natural soft-water habitat and dense planting to provide cover, break sightlines, and reduce stress.
Red Tailed Redeye Puffer Compatibility Notes
Classified as semi-aggressive, the Red Tailed Redeye Puffer is adaptable and can be kept singly or in a small group, offering flexibility when planning a community tank. When choosing tankmates, avoid housing with slow-moving or long-finned species that may become targets for fin nipping, ornamental shrimp are not safe companions, snails will be treated as food rather than tankmates, and territorial behaviour may cause issues if hiding spots or floor space are limited. Selecting tankmates that favour different water layers from the mid-level and bottom zones can help reduce competition and territorial overlap.
Who Red Tailed Redeye Puffer Is Actually For
Red Tailed Redeye Puffer is best for a fishkeeper who wants a species that can settle into a calmer community setup and can provide someone who understands its individual space requirements. It makes the most sense for a hobbyist who will actually build around its needs, especially plants.
The most common mistake is buying Red Tailed Redeye Puffer for looks first and only later discovering how its adult size, behavior, or bioload changes the whole tank plan. Another frequent problem is forcing it into an over-busy community when it would do better with more room or more deliberate tankmate choices.
Red Tailed Redeye Puffer Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Red Tailed Redeye Puffer.
15 Gallon Standard
20 Gallon High
20 Gallon Long
29 Gallon Standard
30 Gallon Breeder
36 Gallon Bowfront
Show 20 more tank sizes
Red Tailed Redeye Puffer Feeding & Diet Considerations
The Red Tailed Redeye Puffer will hunt and eat ornamental shrimp, making it unsuitable for shrimp-focused setups and actively feeds on snails and can be used as a natural snail population control.
Frequently Asked Questions About Red Tailed Redeye Puffer
How big does Red Tailed Redeye Puffer get?
Red Tailed Redeye Puffer (Carinotetraodon irrubesco) typically reaches a maximum adult size of approximately 4.5 cm. They have a globular body shape and a moderate growth rate.
What tank size does Red Tailed Redeye Puffer need?
A minimum aquarium volume of 55 litres and a tank length of at least 60 cm are recommended for Red Tailed Redeye Puffer. This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Red Tailed Redeye Puffer need?
Red Tailed Redeye Puffer thrives in freshwater only conditions with a temperature range of 24–28°C, a pH between 6 and 7.5, and a general hardness of 4–15 dGH. A low water flow is preferred.
Is Red Tailed Redeye Puffer peaceful or aggressive?
Red Tailed Redeye Puffer is classified as semi-aggressive with an aggression score of 6 out of 10. They can work in community setups but may clash with certain tankmates.
Can Red Tailed Redeye Puffer live alone?
Yes, Red Tailed Redeye Puffer can be kept singly or in a group. They are flexible and adapt well to both setups.
Is Red Tailed Redeye Puffer safe with shrimp?
No. Red Tailed Redeye Puffer is known to eat ornamental shrimp and is not recommended for shrimp tanks. Even larger shrimp species like Amano Shrimp may be at risk.
Will Red Tailed Redeye Puffer eat snails?
Yes. Red Tailed Redeye Puffer actively feeds on snails. While this can be useful for controlling pest snail populations, it means decorative snails should not be housed with this species.
Does Red Tailed Redeye Puffer have any special tank requirements?
Yes. Red Tailed Redeye Puffer benefits from plants - densely covered and leaf litter/blackwater in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Useful setup supplies
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Guidarium Editorial Desk
Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.
- Last reviewed
- May 11, 2026
- Last updated
- May 11, 2026
- Issues or corrections?
- Contact the editorial team
Plants That Suit Red Tailed Redeye Puffer
These plants pair well with Red Tailed Redeye Puffer based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
Amazon Frogbit
Limnobium laevigatum
Asian Watergrass
Hygroryza aristata
Asian Watermoss
Salvinia cucullata
Beckett's Water Trumpet
Cryptocoryne beckettii
Broad-leaved Crypt
Cryptocoryne pontederiifolia
Carolina Fanwort
Cabomba caroliniana
Fish Similar to Red Tailed Redeye Puffer
Abei Puffer
Pao abei
A highly intelligent, interactive, and aggressive freshwater pufferfish native to the Mekong basin. They feature an earthy base color speckled with bright orange or pale spots. As true ambush predators and molluscivores, they require hard-shelled foods like snails and crustaceans to naturally file down their ever-growing teeth. Due to their extreme territoriality and formidable bite, they are widely considered a 'wet pet' and must be kept strictly alone.
Dwarf Pea Puffer
Carinotetraodon travancoricus
The Dwarf Pea Puffer is a tiny, fully freshwater pufferfish native to India. Despite their cute appearance, they are fierce micropredators and notorious fin-nippers. Modern husbandry standards strongly dictate they are highly social and must be kept in species-only shoals of 6 or more in heavily planted aquariums to disperse aggression and reduce stress. They require a steady diet of small snails and live/frozen foods.
Brown Puffer
Pao turgidus
A heavily built, strictly freshwater pufferfish native to the Mekong basin in Southeast Asia. Often sold as part of the 'Target Puffer' complex, the Brown Puffer is a notorious ambush predator. They spend much of their time lurking among plants or partially buried in the substrate waiting for prey. They are highly aggressive, strictly solitary, and possess a sharp beak capable of crushing snails and fatally injuring tank mates.
Arrowhead Puffer
Pao suvattii
A highly predatory freshwater pufferfish native to the Mekong basin. Named for its V-shaped, flattened head, it is a specialized ambush predator that buries itself in sand with only its eyes and upwards-facing mouth exposed. It is notoriously aggressive and will consume or fatally bite any tankmate, regardless of size. Must be kept strictly solitary.
Fahaka Puffer
Tetraodon lineatus
A massive, highly intelligent, and extremely aggressive freshwater pufferfish native to the Nile, Senegal, and Niger rivers. Often referred to as 'water dogs' due to their owner recognition and begging behavior. They are strictly solitary pets that will relentlessly attack and kill any tank mates. They require a diet of hard-shelled invertebrates to keep their ever-growing teeth trimmed.
Amazon Puffer
Colomesus asellus
One of the few truly freshwater, community-safe pufferfish. Native to the Amazon basin, these energetic swimmers are known for their bumblebee-like stripes and erratic swimming patterns. Unlike most puffers, they are social and prefer to be kept in groups. CRITICAL WARNING: This species has the fastest-growing teeth of any puffer. They REQUIRE a daily diet of hard-shelled foods (snails, clams, crustaceans) or they will require manual dentistry (trimming) to prevent starvation.