Philippine Blue Angelfish: The Blue Gene, and What a Pinoy Is

There is no blue pigment anywhere in a Philippine Blue Angelfish. The colour is structural: the "Philippine Blue" (pb) gene changes the way light reflects off the scales, so the sheen shifts with the lighting and the angle you look from, and it can look silver from the wrong side of the tank. That is also why photographs of this fish disagree with each other so much.

The gene comes in doses, which is where most of the confusion about the name starts. One copy gives the Philippine Blue sheen. Two copies give a deeper, more solid blue, and that fish is usually sold as a Pinoy — the same gene, not a different variety. Everything else about it — size, water, temperament, lifespan, tank mates — is an ordinary Pterophyllum scalare, identical to the Silver it was bred out of.

Appearance & Identification

Base body color ranges from silver to platinum, with the blue sheen laid over it. The intensity of the blue varies with the fish's mood, health, lighting, and genetic makeup.

Behavior & Temperament

Like all angelfish, the Philippine Blue is a cichlid with a classic cichlid personality: generally peaceful but can become territorial with their own kind and may bully smaller, more timid fish, including preying on very small fish like nano rasboras or newborn shrimp.

• Excellent tank mates: larger tetras (Black Skirt, Serpae), Corydoras catfish, Plecos, Rainbowfish, and Gouramis.
• Avoid: fin-nippers like Tiger Barbs, and fish small enough to be eaten such as Neon Tetras or Guppies.

See our full Angelfish Tank Mates guide for a complete list.

Aquarium Setup and Care

• Tank shape: height matters more than length; a minimum height of 18 inches (45 cm) is recommended.
• Decor: broadleaf plants like Amazon Swords and Anubias, plus driftwood or vertical slate for security and potential spawning sites.
• Water quality: clean and stable, with regular water changes (25% weekly) and a high-quality filter to keep colors vibrant.
• Diet: a varied diet is key to health and coloration — a high-quality cichlid flake or pellet as a staple, supplemented with frozen or live brine shrimp, daphnia, and bloodworms.

Water Parameters & Maintenance

Temperature 76–82°F (24–28°C), pH 6.5–7.5, soft to moderately hard (3–10 dGH). Perform weekly water changes of 20–30% to keep water quality high and colors vibrant.

Breeding Tips

Philippine Blue Angelfish form monogamous pairs and spawn on flat surfaces such as leaves or aquarium glass. Condition breeding pairs with protein-rich live foods. Some pairs guard their eggs diligently, while others may eat them if stressed — consider removing eggs to a separate hatching tank in that case. The breeding process itself is identical to most freshwater angelfish; see our full breeding guide for details.