Angelfish Koi – Pterophyllum scalare | Popular breeding form with bright orange and white coloration

The Koi Angelfish ( Pterophyllum scalare 'Koi' ) is a colorful and extremely popular cultivated variety of the classic Amazon angelfish. Its high-contrast orange and white markings are reminiscent of Japanese koi carp and make it a real eye-catcher in the aquarium. The intensity of the colors varies depending on the light and the aquarium's atmosphere, giving it a particularly vibrant appearance.

This variety was selected from South American wild forms and is known for its calm, peaceful behavior. The angelfish koi is ideally suited for keeping in groups in large, planted aquariums and gets along well with other peaceful species.

🌿 Characteristics & Attitude:
🐟 Fish size: M (approx. 3–4 cm, juvenile)
🌍 Origin: South America (Amazon region) – Captive bred
🌡️ Temperature: 26-30°C
💧 pH value: 6.0–7.0
⚖️ Total hardness: up to 12 °dGH
🐠 Social behavior: Peaceful, group-forming
🏞️ Aquarium: 300 liters or more, tall and well-planted

🍽️ Feeding:
The angelfish readily accepts frozen, live, and granulated food. A varied diet with color enhancers (e.g., krill or spirulina) promotes vibrant markings.

💡 Tip:
Keep Pterophyllum scalare 'Koi' in groups of at least 5 fish. Soft, slightly acidic water and warm light bring out the orange coloration particularly well.

👉 Conclusion:
The angelfish koi ( Pterophyllum scalare 'Koi' ) is a peaceful, colorful breeding form – ideal for large South American aquariums with natural structures.