Penguin Tetra

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Penguin Tetra Care Guide


Penguin Tetra (Thayeria boehlkei) is a peaceful, schooling fish known for its distinctive black stripe that runs from the middle of its body to the base of its tail. These hardy fish are a great addition to community aquariums.

Tank Setup

  • Size: Minimum 20 gallons.
  • Substrate: Fine gravel or sand.
  • Filtration: Moderate; ensure good water flow and oxygenation.
  • Decor: Include plants, driftwood, and rocks to provide hiding spots and mimic natural habitat.
  • Water:
    • Temperature: 72-82°F (22-28°C)
    • pH: 6.0-7.5
    • Hardness: Soft to moderately hard (3-12 dGH)


  • Diet: Omnivorous; provide high-quality flake or pellet food, supplemented with live or frozen foods like brine shrimp, daphnia, and bloodworms.


  • Water Changes: 20-30% weekly to maintain water quality.
  • Tankmates: Peaceful community fish; best kept in groups of six or more to prevent stress and promote natural schooling behavior.


  • Common Issues: Monitor for signs of common freshwater diseases like Ich. Maintain stable water conditions and a varied diet to ensure optimal health.

By following these guidelines, your Penguin Tetras will thrive and exhibit their lively schooling behavior and striking appearance.

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