Threadfin Cardinalfish (Apogon leptacanthus)
Fish in the family Apogonidae. Moderate care. Reef Safe.
Quick facts
Appearance
A small, slender cardinalfish with a reddish or pale tan coloration on the body and distinctive thread-like pelvic fins that extend well beyond the body. The dorsal and anal fins are elongated, and the fish has a somewhat translucent appearance with minimal markings.
Diet and feeding
Feeds on small crustaceans and zooplankton in the wild. In captivity, offer frozen mysis shrimp, copepods, and small live prey like brine shrimp. Feed 2-3 times daily with small portions.
Difficulty and care for the Threadfin Cardinalfish
Moderate difficulty. Threadfin Cardinalfish are hardy once established, but they are nocturnal and slow feeders that require careful acclimation and patience to transition to prepared foods. They need adequate shelter and non-aggressive tankmates.
Common health issues
Parasitic infections, bacterial infections, starvation if not acclimated to prepared foods
Origin and habitat
Indo-Pacific region from the Red Sea and East Africa to the western Pacific, including the Philippines, Indonesia, and Great Barrier Reef areas.
Log Threadfin Cardinalfish in your reef tank
Reef Trak gives you the full record on every species in your tank: acquisition date, source, photos, parameters at time of stocking, and links to maintenance and feeding events. Track Threadfin Cardinalfish alongside everything else in your reef.
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