Banggai Cardinal fish have become one of the most popular marine aquarium species. They are found in remote islands of Indonesia and are known to hide within the spines of long-spine sea urchins. Due to a limited range in the wild, and overcollecting due to popularity, some authors believe these Cardinals may become an endangered species.

This species is known to be a mouthbreeder. The male holds the fertilized eggs in his mouth through full development, and releases them as juveniles. Banggai Cardinals have a spawn size of anywhere from 12-43 fry, which develop in the male's mouth for 20-24 days. They will spawn every 30 days and it is not uncommon to observe this in home aquaria. The juveniles emerge ready to take newly hatched brine shrimp. For these reasons, this is a species many home aquarists have bred and reared.