Orange-lined Cardinalfish Care Guide
Archamia fucata · Saltwater Cardinalfish

What Orange-lined Cardinalfish look like
The Orange-lined Cardinalfish (Archamia fucata) exhibits a streamlined, elongated body that can reach a maximum adult size of approximately 3 inches (7.5 cm). Its coloration is characterized by a translucent body adorned with vibrant orange to reddish lines that run longitudinally from the head to the caudal fin, providing excellent camouflage among the reef substrate. The species displays sexual dimorphism, with males typically exhibiting more pronounced coloration and slightly larger dorsal fins compared to females. Defensive adaptations include the ability to blend into the surrounding environment, and they possess a small, sharp set of teeth that aids in capturing prey. Notably, the species has a well-defined lateral line system that enhances its sensory perception in dimly lit reef environments.
Behavior & temperament
Archamia fucata is a social species that thrives in small to moderate-sized groups, often forming loose aggregations around coral structures. They are primarily mid-water swimmers, frequently hovering near the reef's surface. Breeding behavior involves the males engaging in courtship displays that include body posturing and color changes to attract females. The species is generally peaceful but can exhibit territoriality during breeding seasons, particularly among males. Their temperament is characterized as shy, often retreating to crevices or coral formations when threatened.
Diet & feeding
In the wild, the Orange-lined Cardinalfish primarily feeds on zooplankton, small crustaceans, and other minute marine organisms. In captivity, they thrive on a varied diet that includes high-quality flake food, frozen or live brine shrimp, and finely chopped mysis shrimp.
Behind the name
The genus name 'Archamia' is derived from the Greek word 'archaios,' meaning ancient, while the species name 'fucata' comes from the Latin word 'fucus,' referring to a type of seaweed, indicating its association with reef habitats.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
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