The average size of most Cardinalfish is 5 cm. These fish make great additions to a peaceful aquarium, adapting well to life in an aquarium. Lots of rockwork and coral decorations should be provided to enable the fish to retreat from other fish in the aquarium if needed. Cardinalfish can be bred successfully in captivity, and the babies can be raised to adulthood with appropriate care. Many of the Bangi Cardinal fish available are all from captive bred sources.