Frostfin Cardinalfish

The Frostfin Cardinalfish (Ostorhinchus hoevenii) is a peaceful species that is reef-safe, admired for its delicate frosted-white fins contrasting against a warm orange to reddish body, subtle vertical stripes, and moderate size. Males typically display slightly brighter coloration and may have more intense fin markings during breeding, while females and juveniles show softer hues with less distinct patterns. They reach about 3 to 4 inches in adult size and should be housed in aquariums of at least 30 gallons.

Provide a sandbed with plenty of live rock and hiding spots such as caves and crevices, as well as some open swimming space. Maintain stable water parameters with salinity around 1.020-1.025, temperature between 72-79°F, and pH from 8.1-8.4. A secure lid is important since cardinalfish are known to be jumpers.

Diet should consist of meaty foods including mysis shrimp, brine shrimp, copepods, and quality pellets or flakes. With proper care, the Frostfin Cardinalfish makes a graceful and peaceful addition to reef aquariums.

International Aquatics Quarantine & Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.

Several species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.