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Fish Freshwater Care: medium Aggressive

Red-tail Red-eye Puffer

Carinotetraodon irrubesco
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Other names: Red-tail puffer, Red-tailed dwarf puffer, Irrubesco
Group: Oddballs and specialty fish · Family: Tetraodontidae · Origin: Southeast Asia — slow-flowing, planted waters of Sumatra, Indonesia

A small, fully freshwater puffer of 4–5 cm; males have red eyes and red edges on the tail. Like the dwarf puffer, it is a snail hunter and nips fins.

Will it suit my tank?

Last updated October 16, 2026

Temperature
24–28°C
pH
6–7
Hardness
2–10 dGH
Adult size
4.5 cm
Minimum tank size
60 liters
Social structure
Harem (one male, several females)
Male–female ratio
1 erkek : 2 dişi
Swimming zone
Middle
Diet
Carnivore
Breeding
Egg scatterer

Water parameters

Temperature24–28°C
pH6–7
General hardness (GH)2–10 dGH
Recommended range
Fin nipper Eats shrimp Eats snails Suitable for planted tanks

Overview

October 16, 2026 · Suggest an edit

The red-tail red-eye puffer is a small puffer from the fresh waters of Sumatra that stays at 4–5 cm. Males stand out with their red eyes, dark bellies and the red-orange edges of the tail fin; females have brown blotches and are plainer. It does not need salt; it likes soft, slightly acidic water. Its care is similar to that of the dwarf puffer, but it is a little larger and more aggressive.

Tank Setup

October 16, 2026 · Suggest an edit
  • At least 60 liters for 1 male and 2 females; dense plants and sight barriers.
  • 25–27°C, soft, slightly acidic water; roots and dried leaves are suitable.
  • It is sensitive to nitrate buildup; 30% water changes every week.
  • Males are very aggressive toward each other; keep a single male in a small tank.

Diet

October 16, 2026 · Suggest an edit

Carnivorous; it usually refuses dry food. Offer small snails (essential for wearing down the teeth), frozen bloodworms, brine shrimp and cyclops.

Behavior and Compatibility

October 16, 2026 · Suggest an edit

Curious, territorial and aggressive; it bites the fins of other fish and hunts shrimp and snails.

Good companions: it is best kept only with its own kind.

Avoid: community fish, especially slow and long-finned species; shrimp; snails (they become food).

A short profile for this species

The Red-tail Red-eye Puffer page has the basics, but the sections below have not been written yet. If you keep this species, write a section from your own experience; it will be published under your name after editor approval.

Tank mates

This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.

Usually compatible

Should not be kept together

Hobbyist notes

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Change history and contributors
  1. Page created · October 16, 2026