Yellow Fin Fairy Wrasse

The Yellow Fin Fairy Wrasse (Cirrhilabrus flavidorsalis) is a compact and beautifully colored reef wrasse prized for its vivid male coloration and graceful swimming behavior. Mature males can display shades of red, pink, orange, and pale cream across the body, contrasted by a brilliant yellow dorsal fin. Coloration can shift noticeably with mood, social status, and display behavior, giving established males an especially dynamic appearance.

Native to the Western Central Pacific, this species occurs around the Philippines, eastern Indonesia, and Sabah, Malaysia. It naturally inhabits protected coral and rubble slopes, often among finely branching coral habitat at depths ranging from approximately 20 to 130 feet. In the wild, Yellow Fin Fairy Wrasses may occur in social aggregations while feeding on small planktonic organisms above the reef.

Reaching only about 2.5–3 inches as an adult, this species is an excellent marine aquarium fish for established reef systems. Its peaceful temperament, active midwater behavior, brilliant coloration, and excellent compatibility with corals make it particularly appealing for smaller and medium-sized reef aquariums.

Quick Care Guide

Care Level: Easy to Moderate
Minimum Tank Size: 40 gallons
Temperament: Peaceful
Diet: Planktivore / Carnivore
Reef Safe: Yes
Region: Western Central Pacific – Philippines, Eastern Indonesia, and Sabah, Malaysia
Scientific Name: Cirrhilabrus flavidorsalis

Tank Requirements

Provide an established aquarium with a combination of open swimming space and substantial rockwork. The Yellow Fin Fairy Wrasse is an active midwater swimmer that benefits from unobstructed areas where it can cruise and feed throughout the day.

Rockwork should provide caves, crevices, overhangs, and protected retreats where the fish can shelter when frightened and sleep at night. Unlike many sand-burying wrasses, fairy wrasses do not require a deep sand bed and normally retreat into reef structure after dark.

Moderate to strong water movement and good oxygenation are appropriate. The aquarium should provide both active circulation and protected areas where the fish can rest comfortably.

A tightly secured aquarium lid or fine mesh cover is essential. Fairy wrasses are accomplished jumpers and can escape through surprisingly small openings, particularly when startled, chased, or newly introduced.

Diet and Feeding

The Yellow Fin Fairy Wrasse is primarily a planktivorous carnivore that naturally captures small zooplankton from the water column.

Offer a varied diet including mysis shrimp, enriched brine shrimp, copepods, cyclops, finely chopped krill, and quality frozen marine blends. Appropriately sized high-quality marine pellets and flakes can also be incorporated once readily accepted.

Because of its small size and active metabolism, two to three modest feedings per day are ideal. Foods that remain suspended briefly in the water column encourage natural feeding behavior.

A mature reef aquarium containing copepods and other microfauna can provide useful supplemental feeding opportunities, but natural prey populations should not replace regular prepared feeding.

Temperament and Tankmates

The Yellow Fin Fairy Wrasse is generally peaceful and works well with other non-aggressive marine aquarium fish. Suitable tankmates include gobies, blennies, clownfish, cardinalfish, anthias, flasher wrasses, and many other peaceful fairy wrasses.

Mature males may become territorial toward other male fairy wrasses, particularly closely related or similarly colored species. Providing adequate swimming space and numerous retreats helps reduce competition when maintaining multiple wrasses.

This species naturally occurs in social aggregations and can be maintained with compatible females in sufficiently spacious aquariums. Avoid highly aggressive tankmates that may continually chase the wrasse or prevent it from feeding.

Reef Compatibility

Reef Safe: Yes.

The Yellow Fin Fairy Wrasse is highly suitable for reef aquariums and does not normally consume healthy coral tissue. SPS corals, LPS corals, soft corals, zoanthids, and clams are generally safe.

Established ornamental shrimp, crabs, snails, and other common reef invertebrates are also typically ignored. Tiny planktonic crustaceans such as copepods are natural prey and will be consumed as part of the fish's normal feeding behavior.

Its small adult size and midwater lifestyle make it unlikely to disturb coral frags, move substrate, or rearrange aquascaping.

Water Parameters

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

Maintain stable water chemistry and good oxygenation. Consistency in temperature, salinity, and pH is more important than maintaining one exact value within these ranges.

Common Considerations

• A tightly secured aquarium lid is essential because fairy wrasses are exceptional jumpers.

• Mature males can display considerable color variation, with the distinctive yellow dorsal fin becoming especially prominent during displays.

• Benefits from two to three small daily feedings of appropriately sized planktonic and meaty foods.

• Males may become territorial toward similar fairy wrasses despite being generally peaceful toward unrelated tankmates.

• Does not require a sand bed for sleeping and normally retreats into rockwork at night.