How much space do angelfish need to live?

Angelfish typically require at least a 20-gallon aquarium to thrive, as they need ample swimming space and territory. For a pair of angelfish, a larger tank of 30 gallons or more is recommended to reduce territorial disputes. Additionally, providing vertical space is important since angelfish are native to rivers with varying depths. A well-planted tank with hiding spots can also help create a comfortable environment for them.