Reef Safe Aquarium Fish - Cardinal Fish

Cardinal Fish in the Reef Aquarium

General description: Cardinal fishes are a family of ray-finned fishes. There is a handful of species that are popular in reef aquariums because they are small, peaceful, and colorful. Cardinals are often identified by their little bodies and big eyes. Their disproportionate eyes are used to locate small crustaceans and fish to feed upon. Cardinals are school fish and it is suggested that they be kept in groups of three or larger. It’s difficult to identify male from female cardinals, so spawning will probably occur within the aquarium. Some species are mouth brooders (the eggs will be kept inside the mouth of the males).

Living conditions: Cardinals are naturally found living in schools among reefs. They are nocturnal fish, so they should be provided with plenty of dark hiding spots when placed in an aquarium. Cardinals are peaceful fish and fare well in community reef tanks; however, because they are so peaceful, it is not recommended that they be kept with aggressive tank mates.

Feeding: Cardinals are not picky eaters and should be offered a varied carnivorous diet (brine shrimp, mysis shrimp, bloodworms, etc.).