The Pajama Cardinal is one of the most popular marine aquarium fish, not to be confused with the similar but less-attractive Orbic Cardinal (Sphaeramia orbicularis).
Like other Cardinals they are mouth brooders however the larvae do not develop in the mouth. They are released upon hatch and are among the most challenging larvae we work with. Most hobbyists assume that all Cardinals reproduce just like a Banggai Cardinal and often overlook the significance of the availability of other species.
As with most cardinals, they are generally docile in aquariums and should not be housed with overly aggressive tankmates.
They are a great fish for reef tanks, and swim freely in full view. They will eat a variety of aquarium foods including frozen foods and pellets.