General
Cardinalfish are generally fairly hardy and peaceful. They will sometimes
form a close association with invertebrates, similar to the relationship between
clownfish and anemones. They are also interesting because they reproduce by
mouth brooding, a behavior that makes it possible for even novice hobbyists to
breed and raise the young.
Feeding/Diet
A high quality, dry, prepared food would be a good standard offering,
supplemented by some frozen foods. Frozen mysis shrimp, plankton, and bloodworms
are all good choices that should be offered once per week.
These are usually very peaceful fish but are sometimes quarrelsome between two males of the same species. They are best kept in pairs or small schools with only one male. Other suitable tank mates would include angelfish, anthias, basslets, blennies, butterflyfish, clownfish, chromis, damsels, gobies, hawkfish, tangs and small wrasses. Some cardinalfish will form a symbiotic relationship with spiny urchins, living amongst the sharp spines for protection.
Habitat
In nature, these are nocturnal fish, but they readily acclimate to
aquarium life and venture out during the day. You should provide an
ample amount of rockwork and caves to ensure that your specimens feel
comfortable. Live plant growth, such as Feather Caulerpa (Caulerpa
sertularioides), would also be a good idea. Due to over collection
Banggai Cardinalfish (Pterapogon kauderni) populations are quickly
declining, captive bred specimens are available and highly recommended
over their less hardy wild counterparts.
Best Bets
Banggai Cardinalfish (Pterapogon kauderni) - Captive bred specimens only!
Pajama Cardinalfish (Sphaeramia nematoptera)
Banggai Cardinalfish
PJ Spotted Cardinalfish
