The Koi angelfish stands out due to its mottled black, white, yellow, and orange coloring. They have a slender body, reaching approximately 15 centimeters in length. These fish are known for their elegant, and graceful temperament. They tend to move slowly throughout the tank, which can be very peaceful to watch. Despite their gentle nature, if the angelfish senses a threat during spawning they could become territorial exhibiting more aggressive behavior.