Redfin Penguin Tetra

Redfin Penguin Tetra (Thayeria boehlkei variant)

The Redfin Penguin Tetra is a beautiful and active freshwater fish admired for its distinctive black "penguin" stripe and attractive red-tinted fins. This striking color combination, along with its graceful swimming style, makes it a popular choice for planted and community aquariums. The bold black line extending through the body and into the lower tail fin creates the appearance of a penguin silhouette, giving this fish its well-known name.

Growing to approximately 5–6 cm (2–2.4 inches), Redfin Penguin Tetras are peaceful schooling fish that should be kept in groups of six or more. They are energetic swimmers that thrive in aquariums with plenty of open swimming space, complemented by plants, driftwood, and shaded areas that mimic their natural habitat.

These hardy omnivores readily accept high-quality flakes, pellets, and live or frozen foods. Regular water changes and a varied diet will help maintain their vibrant coloration and encourage natural schooling behavior.

Interesting Fact:
Redfin Penguin Tetras are known for their unique swimming posture, often gliding through the water at a slight upward angle. This unusual behavior helps distinguish them from many other tetra species and adds to their charm in the aquarium.

Quick Facts

• Scientific Name: Thayeria boehlkei
• Common Name: Redfin Penguin Tetra
• Adult Size: 5–6 cm (2–2.4 inches)
• Temperament: Peaceful
• Care Level: Easy
• Tank Size: 75 litres (20 gallons) minimum
• Temperature: 23–28°C (73–82°F)
• pH: 6.0–7.5
• Diet: Omnivore
• Lifespan: 3–5 years
• Schooling: Yes, keep in groups of 6 or more
• Aquarium Level: Mid-water

The Redfin Penguin Tetra is an excellent choice for aquarists looking for a peaceful, eye-catching schooling fish that combines unique markings, active behavior, and vibrant coloration in a community aquarium.

Information provided by Bubbly Fish.