Pterophyllum scalare, most commonly referred to as angelfish or freshwater angelfish, is the most common species of Pterophyllum kept in captivity. It is native to the Amazon Basin in Peru, Colombia, and Brazil.
It is found in swamps or flooded grounds where vegetation is dense and the water is either clear or silty. Its native water conditions range from a pH of 6.0 to 7.0, a water hardness range of 3 to 10 °dH, and water temperature ranging from 26 to 30 °C (75 to 86 °F). This is the species of angelfish most frequently found in the aquarium trade.