Least Killifish Tetra (Iotichthys phlegethontis)
Iotichthys phlegethontis
Origin: USA (Bonneville Basin, Great Basin)
Water Parameters
Quick Stats
- Max Size
- 3 cm
- Min Tank
- 40 L
- Lifespan
- 2-3
- Swimming Level
- middle
- Schooling
- Yes (8–20+)
- Diet
- omnivore
- Temperament
- peaceful
About
Iotichthys phlegethontis is a tiny, peaceful tetra from the Bonneville basin of North America, making it one of the few native North American nano fish in the aquarium hobby. Its subtle silver-gold coloration and active schooling behaviour make it charming in a species tank. Hardy and cold-tolerant, it thrives in unheated setups.
Care Guide
Keep in groups of at least 8 in a planted aquarium of 40 L or more. Tolerates cooler temperatures (16–24°C) and a wide range of pH. Feed micro-pellets, baby brine shrimp, and fine flake. Best in a species tank or with other small cold-tolerant fish. A delightful nano fish for the patient aquarist.
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