What Makes a Koi Angelfish?

What Makes a Koi Angelfish?

When it comes to the world of angelfish, one variety that stands out with its stunning colors and patterns is the Koi Angelfish. These beautiful fish have captivated hobbyists for years, and it’s no wonder why. In this article, we will dive deep into what makes a Koi Angelfish so unique and how to care for them properly.

The Origin of Koi Angelfish

Koi Angelfish are a result of selective breeding techniques applied to the common angelfish (Pterophyllum scalare). This process involves carefully crossbreeding angelfish with specific color variations to achieve the desired Koi pattern.

The Koi pattern is reminiscent of the famous Japanese Koi fish, characterized by vibrant colors and distinct markings. This unique blend of colors sets the Koi Angelfish apart from other varieties, making them highly sought after by aquarium enthusiasts.

Distinctive Features


  • Koi Angelfish showcase a wide range of colors such as orange, yellow, black, and white.
  • Their bodies are adorned with striking patches or bands of color, resembling those seen on traditional Koi fish.

Fin Types:

  • Koi Angelfish can have either standard or veil fins.
  • Standard fins are shorter and more compact while veil fins are longer and flow gracefully.

Caring for Your Koi Angelfish

Tank Setup

To ensure your Koi Angelfish thrives in your aquarium, it’s important to provide them with a suitable environment.

Tank Size:

Due to their potential size and active nature, it is recommended to keep Koi Angelfish in a tank no smaller than 30 gallons.

Water Parameters:

  • Koi Angelfish prefer slightly acidic water with a pH range of 6.5-7.0.
  • The temperature should be maintained between 78-82Β°F (25-28Β°C).

Diet and Feeding

Koi Angelfish are omnivorous and will readily accept a varied diet.

Commercial Fish Food:

  • High-quality flake or pellet food specifically formulated for angelfish should form the basis of their diet.

Supplementary Foods:

  • Offer frozen or live foods such as brine shrimp, bloodworms, and daphnia to provide added nutrition and variety.


Koi Angelfish are generally peaceful but can become territorial during breeding. When selecting tankmates, consider peaceful species that can tolerate their potential aggression.

Note: Avoid housing Koi Angelfish with fin-nipping species or aggressive fish that may stress or harm them.

In Conclusion

Koi Angelfish are undeniably stunning fish that add a touch of elegance to any aquarium. With their vibrant colors and unique patterns reminiscent of Koi fish, they are sure to be the centerpiece of your aquatic display. By providing them with suitable care and a well-maintained environment, you can ensure that your Koi Angelfish thrives and continues to mesmerize you for years to come.

Photo of author

Emma Gibson