Filamented Flasher Wrasse Care Guide
Paracheilinus filamentosus · Saltwater Wrasse

What Filamented Flasher Wrasse look like
The Filamented Flasher Wrasse (Paracheilinus filamentosus) exhibits a strikingly vibrant coloration, characterized by a predominantly bright blue body adorned with intricate yellow and orange markings. Adult males can reach a maximum size of approximately 3.5 inches (9 cm), while females are typically smaller, showcasing sexual dimorphism with males displaying elongated dorsal fin filaments that can extend significantly beyond the body length, particularly during courtship displays. The species possesses a robust, laterally compressed body with a pointed snout and a terminal mouth, equipped with small, conical teeth adapted for feeding on small invertebrates. The presence of a lateral line system aids in detecting water movements, enhancing their predatory efficiency. Additionally, the species features a distinctive pattern of scales that reflects light, contributing to its vibrant appearance and aiding in communication among conspecifics.
Behavior & temperament
Filamented Flasher Wrasses are known for their dynamic social behaviors, often forming small groups or harems led by a dominant male. They inhabit the reef's upper strata, exhibiting a tendency to swim in a darting manner, which is characteristic of their family. During breeding, males perform elaborate courtship displays that involve rapid flashing and fin extensions to attract females. Their temperament is generally peaceful; however, males can exhibit territorial aggression towards one another, especially during the breeding season. These wrasses are diurnal and tend to retreat into crevices or under coral ledges at night for protection from predators.
Diet & feeding
In the wild, the Filamented Flasher Wrasse primarily feeds on small crustaceans and zooplankton. In captivity, they thrive on a varied diet that includes high-quality frozen or live foods such as brine shrimp, mysis shrimp, and finely chopped seafood, supplemented with high-quality flake or pellet foods.
Behind the name
The genus name 'Paracheilinus' derives from Greek, where 'para' means 'beside' and 'cheilinus' refers to 'lip,' indicating a close relation to the genus Cheilinus. The species name 'filamentosus' comes from Latin, meaning 'thread-like,' referring to the elongated dorsal fin filaments of the males.
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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