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Angelfish (Pterophyllum scalare)

Angelfish are often called the "kings" of aquarium fish — striking in shape and color, but with clear demands on tank size and tank mates.

OriginSouth America, central Amazon
Sizeup to 6–10 in, height up to 14 in
Tank sizemin. 60 in footprint / roughly 80 gal for a group
Social structureGroup of 5–6, or established pairs
Temperature75–82°F
pH level6.0–7.5
Lifespanseveral years, often much longer with good care
DietCarnivore: high protein, live/frozen food

Water parameters in detail

Angelfish prefer soft, slightly acidic water but are considered adaptable enough for a normal community tank. More important than exact water parameters for this species is clean water with regular water changes.

Tank mates — proceed with caution

Important to know: Angelfish are cichlids and therefore predatory — anything that fits in their mouth is fair game. Small fish like neon tetras or guppies should not be kept with angelfish, even though this sometimes works for a while.

Good fit

Not suitable

  • Small fish under 1.2 in
  • Fin nippers like tiger barbs
  • Shrimp (they nip at fins)

Notable traits

Angelfish establish territories, especially pronounced during breeding. The more space available, the less aggressive they behave toward tankmates. With too little room, they become noticeably more territorial, since their territory then spans the entire tank.

Common mistakes

The most common beginner mistakes: too small or too shallow a tank, housing them with tankmates that are too small, and underestimating their predatory nature.

Track the right water parameters for your tank

AquaEQ helps you keep the right water parameters for your stocking in view.

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