Five Lined Cardinalfish

The Five Lined Cardinalfish is a larger and more robust member of the cardinalfish family, reaching up to 5 inches in length. It is easily identified by the five distinct horizontal lines that run along its elongated silvery body, from the head to the base of the tail. Native to the Indo-Pacific region, this species is widespread across tropical reefs where it forms schools among coral formations, rocky overhangs, and in the vicinity of sea urchin clusters. Its bold linear pattern and schooling behavior make it a visually compelling aquarium fish.

In captivity, the Five Lined Cardinalfish is a hardy and easy-to-maintain species suitable for aquarists of all experience levels. It accepts a variety of frozen and prepared foods readily and is resistant to most common marine diseases. Due to its larger size compared to many other cardinalfish, a minimum tank of 30 gallons is recommended, especially if keeping a group. This species is most impressive when maintained in schools of three to five individuals, creating an eye-catching display as they swim in coordinated formation.

The Five Lined Cardinalfish is reef-safe and will not harm corals or invertebrates. However, its slightly larger size means it may occasionally prey on very small shrimp or tiny fish fry. It is generally peaceful toward other species but may show mild territorial behavior toward conspecifics in tight quarters. This species is an excellent choice for medium to large reef aquariums seeking an active and visually distinctive schooling fish.