One of the most popular aquarium breeds, the Koi angelfish (Pterophyllum scalare) is an angelfish originating from the Amazon of Peru and Ecuador. Do not be confused by the name, Koi angelfish are not related to the koi species. They get their name by the stark resemblance in both pattern and color to the koi fish but are part of the angelfish family. Similar to all angelfish, the Koi angel is a peaceful fish with a beautiful appearance and a life span of up to ten years.
This is a companion discussion topic for the original entry at https://light.fish/blog/koi-angelfish