Banggai Cardinals, also known as the Kaudern's Cardinalfish, are fairly common saltwater fish with a unique body shape and color pattern. These fish have become a little harder to find. You'll likely find tank-bred specimens compared to their wild-caught counterparts. Since the time of this writing, the Banggai Cardinal has become endangered in the wild. Luckily, they breed fairly easily in a saltwater fish tank. They grow to be around 3 inches and should be kept alone or in pairs when kept in smaller aquariums. This guide will go into detail about the needs of this fish, including their aquarium requirements, reef compatibility, diet, and more.