Cardinal Fish are a great beginner saltwater fish and are peaceful, making them a great community fish. They are easy to care for, stay relatively small, and a favorite as, they occupy the open water area of an aquarium. Cardinal fish also do well in groups where they will be a schooling fish. They do well in a coral reef or rock reef environment and will eat most prepared foods as well as meaty seafoods. There are several varieties of marine aquarium cardinal fish like, Pajama cardinal, Stoplight cardinal fish, Banggai cardinal fish, and Flame cardinal fish just to name a few.
In short saltwater Cardinal fish are a great aquarium fish for most any saltwater aquarium.