Frostfin Cardinalfish

The Frostfin Cardinalfish is an elegant species named for the distinctive white or frosted tips on its fins that create a subtle yet eye-catching contrast against its silvery body. Found across the Western Pacific, this species inhabits coral reef environments where it forms small schools among branching corals, sponges, and rocky overhangs. The delicate frosted appearance of its fins gives this species a refined quality that distinguishes it from other more plainly colored cardinalfish.

In captivity, the Frostfin Cardinalfish is a straightforward species to keep and an excellent candidate for beginning marine aquarists. It adapts quickly to tank life, is resilient against common diseases, and readily accepts a variety of frozen and prepared foods. This species is naturally social and benefits from being kept in groups of three or more, where it will form loose aggregations that hover near preferred shelter sites. A 20-gallon tank with adequate rockwork provides sufficient space for a small group.

The Frostfin Cardinalfish is completely reef-safe and coexists harmoniously with corals, clams, and invertebrates. Its peaceful demeanor makes it suitable for virtually any community reef aquarium. The species is particularly attractive under blue actinic lighting, where its frosted fin tips and silvery body take on a luminescent quality that enhances the visual appeal of the tank.