Koi Angelfish – Pterophyllum scalare
The Koi Angelfish (Pterophyllum scalare) is a beautiful freshwater angelfish variety known for its vibrant orange, white, and black koi-like patterning. Each fish has its own unique markings, making Koi Angelfish a popular centerpiece choice for planted aquariums, aquascapes, and peaceful community tanks.
With their tall body shape, graceful flowing fins, and calm swimming style, Koi Angelfish bring elegance and color to larger freshwater aquariums. They are generally peaceful to semi-peaceful with properly chosen tankmates, but like most cichlids, they may become territorial during breeding.
Key Features
- Orange, white, and black koi-like coloration
- Each fish has a unique pattern
- Elegant flowing fins and tall body shape
- Beautiful centerpiece fish for freshwater aquariums
- Great for planted tanks and aquascapes
- Best in taller aquariums with open swimming space
Care Guide
- Scientific Name: Pterophyllum scalare
- Common Name: Koi Angelfish
- Care Level: Easy to moderate
- Temperament: Peaceful to semi-peaceful; may become territorial during breeding
- Adult Size: Approximately 5–6 inches body length; 8+ inches tall with fins
- Minimum Tank Size: 30 gallons or larger; taller aquariums preferred
- Tank Level: Middle to upper levels
- Water Temperature: 76–82°F
- pH Range: 6.5–7.5
- Hardness: 3–10 dGH
- Diet: Omnivore
Why Choose a Koi Angelfish?
Koi Angelfish are a great choice for aquarists who want a colorful, graceful centerpiece fish with a one-of-a-kind appearance. Their orange, white, and black markings resemble koi fish, giving them a bright and eye-catching look in planted aquariums.
Like other angelfish, Koi Angelfish are intelligent and full of personality. With proper tank size, stable water conditions, and carefully selected tankmates, they can become long-term show fish in freshwater aquariums.
Ideal Tank Setup
Koi Angelfish do best in a taller aquarium with stable warm water, gentle to moderate filtration, and plenty of vertical swimming space. Driftwood, live plants, broad-leaf plants, and open swimming areas help create a comfortable and natural-looking environment.
Planted aquariums with Amazon swords, Vallisneria, Anubias, Java Fern, and driftwood are excellent choices. Avoid overcrowding and strong current, as angelfish have tall bodies and long fins that do best in calmer water movement.
Compatible Tankmates
- Corydoras catfish
- Peaceful larger tetras
- Rasboras too large to be eaten
- Bristlenose Plecos
- Rainbowfish with compatible conditions
- Bolivian Rams
- Pearl Gouramis with caution
- Peaceful South American cichlids with proper space
- Other angelfish with enough room
Tankmates to Avoid
- Tiger Barbs and other fin-nipping fish
- Very small nano fish that may be eaten
- Shrimp or tiny invertebrates
- Highly aggressive cichlids
- Fast, overly aggressive feeders
- Fish that require cooler water conditions
Diet & Feeding
Koi Angelfish are omnivores and do best with a varied diet. Feed quality flakes, angelfish pellets, cichlid pellets, frozen bloodworms, brine shrimp, mysis shrimp, daphnia, freeze-dried foods, and other appropriate prepared or frozen foods.
A balanced diet, clean water, and good aquarium lighting can help maintain strong coloration and healthy fin development. Feed small portions that can be eaten quickly and avoid overfeeding.
Care Tips
- Use a 30 gallon or larger aquarium
- Choose a taller tank when possible
- Provide live plants, driftwood, and open swimming space
- Keep water warm, clean, and stable
- Avoid fin-nipping tankmates
- Feed a varied omnivore diet
- Keep singly, as a pair, or in a small group with proper space
Frequently Asked Questions
What makes Koi Angelfish special?
Koi Angelfish have unique orange, white, and black patterning that resembles koi fish. No two fish look exactly the same.
Are Koi Angelfish easy to care for?
Yes. They are hardy when kept in a stable, properly sized aquarium, making them a good choice for easy to moderate care levels.
Do Koi Angelfish need a tall tank?
Yes. Taller aquariums are preferred because angelfish have tall bodies and long, flowing fins that need vertical swimming space.
Can Koi Angelfish live with shrimp or small fish?
They may eat very small fish, baby shrimp, or tiny invertebrates. Choose tankmates carefully and avoid anything small enough to be viewed as food.
How do I enhance Koi Angelfish coloration?
Clean water, stable conditions, quality lighting, and a varied diet with high-quality pellets, frozen foods, and color-supporting foods can help maintain their best color.
How big do Koi Angelfish get?
They typically reach approximately 5–6 inches in body length and can appear 8 inches or taller with their flowing fins.
Are Koi Angelfish good for planted tanks?
Yes. Koi Angelfish look excellent in planted aquariums and appreciate broad-leaf plants, driftwood, shaded areas, and open swimming space.
Are Koi Angelfish aggressive?
They are generally peaceful to semi-peaceful, but they may become territorial during breeding or if kept in a crowded aquarium.
Are these fish available for shipping?
No. Live fish are available for in-store purchase or local pickup only at Tropical Treasures Wyo in Cheyenne, Wyoming.
Available at Tropical Treasures Wyo
Koi Angelfish are colorful freshwater centerpiece fish for planted aquariums, aquascapes, peaceful community tanks, and larger freshwater displays. Visit Tropical Treasures Wyo in Cheyenne, Wyoming, to shop angelfish, cichlids, centerpiece fish, community fish, freshwater fish, live aquarium plants, fish food, filtration supplies, and aquarium care products. Live livestock is available for in-store purchase or local pickup only.
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