Splendid Pintail Fairy Wrasse - Male

The Splendid Pintail Fairy Wrasse, Cirrhilabrus isosceles, is an exceptionally elegant saltwater fish prized for its vivid coloration and distinctive pointed tail. Mature males display a brilliant blend of orange-yellow, pink, lavender, and purple tones accented by an intense blue to violet stripe extending from the face along the body. The characteristic lance-shaped caudal fin becomes especially prominent in mature males, creating the dramatic “pintail” appearance for which the species is named. Females and juveniles are generally more subdued, with warm orange coloration and less pronounced markings.

Native to the Western Pacific, this fairy wrasse occurs around Japan, the Ryukyu Islands, Taiwan, and the Philippines. It inhabits deeper reef environments with gently sloping bottoms, scattered coral, and rocky outcrops, typically occurring at depths of approximately 80 feet or greater. Its peaceful disposition, manageable adult size, constant open-water activity, and excellent coral compatibility make it an outstanding marine aquarium fish for established reef aquariums.

Quick Care Guide

Care Level: Easy to Moderate
Minimum Tank Size: 55 gallons
Temperament: Peaceful
Diet: Carnivore / Planktivore
Reef Safe: Yes
Region: Western Pacific, including Japan, Taiwan, and the Philippines
Scientific Name: Cirrhilabrus isosceles

Tank Requirements

The Splendid Pintail Fairy Wrasse should be maintained in an established marine aquarium with ample open swimming space and plenty of rockwork for shelter. A 55-gallon or larger aquarium provides suitable long-term room for this active species, which can reach approximately 4 inches in adult size.

Arrange live rock to create caves, overhangs, and narrow crevices where the fish can retreat when frightened or rest at night. Unlike sand-burying wrasses, fairy wrasses typically shelter within reef structure and do not require a deep sand bed.

Moderate water movement, good oxygenation, efficient filtration, and stable water quality are ideal. Because this species naturally occurs in somewhat deeper reef environments, secure shaded areas within the rockwork are also beneficial.

A tightly fitted mesh or solid aquarium cover is essential. Fairy wrasses are exceptionally accomplished jumpers and can escape through surprisingly small openings around plumbing, equipment, or aquarium edges.

Diet and Feeding

The Splendid Pintail Fairy Wrasse is primarily a planktivore that feeds on small crustaceans and other suspended organisms in the water column.

Offer a varied diet of mysis shrimp, enriched brine shrimp, copepods, finely chopped marine seafood, quality frozen plankton blends, and appropriately sized marine pellets. Foods that remain suspended in the water column encourage natural feeding behavior.

Two to three smaller meals per day are preferable when practical. An established aquarium with a healthy population of copepods and other microfauna can provide additional opportunities for natural feeding between prepared meals.

Temperament and Tankmates

The Splendid Pintail Fairy Wrasse is peaceful and generally mixes well with other non-aggressive reef aquarium fish. Suitable tankmates include clownfish, gobies, blennies, cardinalfish, anthias, peaceful tangs, and other community-oriented marine species.

Some displaying and territorial behavior may occur around other fairy wrasses, particularly males of similar species. Multiple fairy wrasses can be maintained successfully in sufficiently spacious aquariums when species selection and introductions are carefully planned.

Like other Cirrhilabrus wrasses, this species is a protogynous hermaphrodite, meaning females have the ability to transition into males depending on social conditions.

Avoid highly aggressive tankmates that may continually intimidate the wrasse or prevent it from feeding normally.

Reef Compatibility

The Splendid Pintail Fairy Wrasse is considered reef safe. It does not normally damage healthy corals and is generally compatible with ornamental shrimp, crabs, snails, clams, and other common reef invertebrates.

Its feeding behavior is concentrated primarily on small planktonic organisms in the water column rather than larger benthic invertebrates, making it especially well suited to coral-dominated reef aquariums.

Tiny naturally occurring copepods and other microcrustaceans will be consumed as part of its normal feeding behavior.

Water Parameters

Temperature: 75–80°F
Specific Gravity: 1.024–1.026
pH: 8.1–8.4
Alkalinity: 8–12 dKH

Stable conditions are more important than continually adjusting the aquarium to achieve an exact value. Maintain consistent temperature and salinity along with good oxygenation, dependable filtration, and regular aquarium maintenance.

Common Considerations

• Exceptional jumping risk: A tightly fitted aquarium cover is essential, including protection around plumbing and equipment openings.

• Distinctive adult male tail: Mature males develop the characteristic elongated, lance-shaped caudal fin responsible for the Pintail name.

• No sand bed required: This fairy wrasse normally seeks shelter within rockwork rather than burying itself in the substrate.

• Frequent feeding: Multiple small meals containing planktonic and protein-rich marine foods help maintain good body condition.

• Peaceful disposition: Avoid highly aggressive or overly territorial tankmates that may intimidate this relatively peaceful wrasse.