Freshwater Angelfish Alternative Name(s): Scientific Name(s): Pterophyllum scalare, P.altum, P. leopoldi Category: Cichlid Difficulty: Maximum Size: 15cms Minimum Tank Volume: 160 litres Minimum Tank Size: 36" x 18" x 15" Water Temperature Range: 24-30°C Water pH Range: 6.0-7.2 Water Hardness Range: 0-15 dGH