Infernalis Tetra – Rare and Striking South American Freshwater Fish
The Infernalis Tetra (Hyphessobrycon sp. "Infernalis") is an unusual freshwater aquarium fish prized for its striking appearance and appeal among collectors of rare South American tetras.
This distinctive fish is offered in the aquarium trade under the name "Infernalis," a name that reflects its dramatic, fiery appearance.
Its attractive coloration can create a beautiful contrast against lush aquatic plants, dark substrates, and natural driftwood arrangements, making it an eye-catching addition to a carefully designed freshwater aquascape.
Infernalis Tetras are best maintained in mature aquariums with stable water conditions, sheltered areas, and adequate swimming space.
As a less commonly documented aquarium-trade fish, this species is particularly interesting for experienced aquarists who appreciate unusual tetras and natural South American aquarium environments.
With its distinctive appearance and uncommon availability, the Infernalis Tetra offers an exciting addition to a specialist freshwater fish collection.
Care Guide
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Parameter
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Details
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Scientific Name
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Hyphessobrycon sp. "Infernalis"
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Common Name
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Infernal Tetra / Infernalis Tetra
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Origin
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Brazil; reported from Pará, near the upper Xingu region
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Adult Size
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Approximately 5–6 cm
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Temperature
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23–27°C
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pH
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5.5–7.5
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Water Hardness
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5–15 dGH
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Recommended Tank Size
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150 L+
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Recommended Tank Length
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100 cm+
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Diet
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Omnivore
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Temperament
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Semi-aggressive / Territorial
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Care Level
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Intermediate
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Group Size
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8+ recommended, with adequate space
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Lifespan
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Up to approximately 5 years; estimated
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Swimming Level
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Middle / Upper
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Water Flow
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Gentle to Moderate
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Aquarium Type
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Spacious Planted Aquarium
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Special Requirements
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Visual barriers, swimming space, secure lid, stable water
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