Join Date: Oct 2010
Location: New England, USA
Koi Angelfish can grow as large as any other type of angelfish (I've seen koi angelfish over 5" across).
I'd love them in their own tank, or in a tank of similarly tempered fish. Not too sure I'd add them to a betta community tank, though... angelfish can be nippy (they are a type of chiclid).
20H: 2 Cory Catfish, One very mellow Cambodian female Betta, Two Golden Veil Angelfish (male and female)