Saltwater Fish
Filamented Flasher Wrasse

Species Description…

Scientific Name: Paracheilinus filamentosus
Common Name: Filamented Flasher Wrasse
Species Group: Wrasses
Habitat: Reef Safe
Care Level: Intermediate
Temperament: Peaceful
Diet Type: Carnivore
Role in Aquarium: Showpiece Fish
Max Fish Length: 3.5 (inches)
Min Aquarium Size: 50 (gallons)
Native Range: Indo-Pacific, including Indonesia and the Philippines
Paracheilinus filamentosus - Filamented Flasher Wrasse

Paracheilinus filamentosus (Filamented Flasher Wrasse)

Overview

  • Native to the Western Pacific Ocean.
  • Known for the elongated filaments on the dorsal fin of males, used in their flashing displays.
  • Small and slender-bodied, with vibrant coloration that intensifies during courtship.
  • Peaceful and active, preferring reef environments with plenty of hiding spaces.

Feeding

  • Carnivorous, feeding on small zooplankton and other tiny invertebrates.
  • Accepts small live or frozen foods such as copepods, brine shrimp, and finely chopped seafood.
  • Requires frequent small feedings throughout the day to support their high activity level.
  • A varied diet helps maintain their health and vibrant colors.

Habitat

  • Inhabits reef slopes and areas with mixed coral and rubble.
  • Prefers areas with good water circulation and plenty of hiding spots among the rocks.
  • Often found in small groups, with males displaying to females.
  • Requires a well-established aquarium with stable parameters and ample live rock.

Fish Care

  • Optimal water temperature: 75-82°F (24-28°C).
  • pH level: 8.1-8.4, specific gravity: 1.023-1.026.
  • Maintaining stable water conditions with regular water changes and efficient filtration is essential.
  • Providing a stress-free environment promotes their overall health and well-being.

Compatibility

  • Peaceful and reef-safe, making them suitable for most community reef aquariums.
  • Best kept with other peaceful species of similar size and temperament.
  • Avoid housing with aggressive or boisterous fish that may intimidate them.
  • Can be kept in small groups with a single male and several females to observe their natural behaviors.

Aquarium Behavior

  • Males exhibit elaborate “flashing” displays, extending their dorsal fin filaments and intensifying their colors to attract females.
  • Active swimmers that spend their time exploring the middle and upper levels of the aquarium.
  • May seek shelter among the rocks when feeling threatened or at night.
  • Adds a vibrant and dynamic presence to reef aquariums with their lively behavior and striking displays.