Shark Fin Naoko's Fairy Wrasse - Male
Shark Fin Naoko's Fairy Wrasse - Male
Goes well with:
FAQs Answers to the most common questions.
How do I tell a true Shark Fin Naoko’s Fairy Wrasse from other “Naoko’s” or similar Cirrhilabrus wrasses at the store?
A true Shark Fin Naoko’s Fairy Wrasse is identified by the tall, sail-like first dorsal fin in males, the elongated fairy wrasse body shape, and the very specific coloration that tends to be cleaner and more refined than many lookalikes. Males usually show a vivid mix of pink, red, orange, yellow, and blue-green tones, with the “shark fin” being the standout feature during display. Females and juveniles are much more subdued and can be harder to separate from related fairy wrasses. Ask for the scientific name if possible, because common names are used loosely in the trade.
What tank size and setup does a Shark Fin Naoko’s Fairy Wrasse really need to stay healthy long term?
For long-term success, a 4-foot tank is the practical minimum, with 55 gallons being the bare floor and 75+ gallons much better for an active individual. They are constant swimmers and do best in a mature reef-style setup with plenty of rockwork, caves, and open sand/rock channels for darting. A tight-fitting lid is essential because this species is an excellent jumper, especially when startled or during nighttime movement. Stable water quality matters more than aggressive filtration tricks.
Will a Shark Fin Naoko’s Fairy Wrasse be peaceful in a community reef, or will it bully other fish?
It is generally peaceful to semi-peaceful, but males can be assertive toward other fairy wrasses and similarly shaped, similarly colored fish, especially in smaller aquariums. In a roomy tank it usually behaves well with gobies, clowns, tangs, blennies, anthias, and other non-aggressive reef fish. The biggest compatibility issue is with other Cirrhilabrus species or closely related wrasses, where rivalry and flashing can lead to chasing. Adding it before more dominant wrasses often improves long-term harmony.
What should I feed a Shark Fin Naoko’s Fairy Wrasse to keep its color and body condition at their best?
It thrives on frequent small feedings of meaty marine foods: mysis shrimp, copepods, enriched brine, finely chopped seafood, and quality small-pellet foods designed for carnivorous marine fish. Feeding 2–3 times daily is ideal because fairy wrasses are active pickers with high metabolisms. Color and vitality are best when the diet is varied and includes planktonic-style foods rather than only large frozen chunks. A well-fed specimen should remain full-bodied, alert, and actively foraging all day.
Do Shark Fin Naoko’s Fairy Wrasses change sex or color, and what behavior should I expect as they mature?
Yes, like many fairy wrasses, they are protogynous hermaphrodites, meaning a female can transform into a male under the right social conditions. As a male matures, the colors intensify dramatically and the dorsal fin becomes more pronounced, especially during courtship or display. You may see flashing behavior, rapid color shifts, and short display dashes toward tankmates or reflections. This is normal, but in cramped tanks it can become stress behavior, so space and visual barriers help a lot.
All listed sizes are approximate, not guaranteed, and may vary slightly.
Naoko’s Fairy Wrasse (Cirrhilabrus naokoae), also known as the Shark Fin Fairy Wrasse, is a striking saltwater fish prized for its dramatic coloration and distinctive elevated dorsal fin. Adult males display a vivid combination of red, yellow, white, blue, and black, with the tall, dark dorsal fin creating the characteristic “shark fin” appearance that gives this marine aquarium fish one of its common trade names.
Native to reef habitats around Sumatra, Indonesia in the eastern Indian Ocean, this active fairy wrasse spends much of its time swimming above and around reef structure in search of small planktonic foods. Its manageable adult size, energetic swimming behavior, and brilliant coloration make it an excellent showpiece for a well-established reef aquarium or fish-only aquarium.
While generally compatible with a wide variety of community fish, Naoko’s Fairy Wrasse has a somewhat assertive temperament compared with some other fairy wrasses. Care should be taken when mixing it with closely related Cirrhilabrus and Paracheilinus species, particularly in smaller aquariums.
Quick Care Guide
Care Level: Easy to Moderate
Minimum Tank Size: 50 gallons
Temperament: Semi-aggressive
Diet: Carnivore / Planktivore
Reef Safe: Yes
Region: Eastern Indian Ocean – Sumatra, Indonesia
Scientific Name: Cirrhilabrus naokoae
Tank Requirements
Provide a mature, well-established aquarium with plenty of live rock or reef structure for shelter while maintaining generous open areas for swimming. Caves, overhangs, and shaded retreats allow the wrasse to feel secure, especially during its initial acclimation period and at night.
Like other fairy wrasses, this species is an accomplished jumper. A tight-fitting mesh screen or secure aquarium lid is essential, including coverage around plumbing, equipment, and other potential escape openings.
A sand bed is not required for sleeping because fairy wrasses typically shelter within rockwork rather than burying themselves. Moderate to strong, varied water movement is suitable as long as calmer areas are available around the rock structure.
Diet and Feeding
Naoko’s Fairy Wrasse is primarily a carnivorous planktivore that naturally feeds on small zooplankton and other tiny organisms suspended in the water column.
In the aquarium, offer a varied diet consisting of enriched mysis shrimp, enriched brine shrimp, finely chopped marine seafood, copepods, quality frozen marine blends, and appropriately sized marine pellets or flakes. A mixture of frozen and prepared foods helps maintain strong coloration and body condition.
Because fairy wrasses are active fish with relatively high energy demands, feeding small portions two or more times per day is beneficial when the aquarium's nutrient-management system allows.
Temperament and Tankmates
This species is active and confident but can be more assertive than many similarly sized fairy wrasses. It generally does well with peaceful to moderately aggressive marine fish that will not harass or outcompete it.
Use additional care when combining it with other fairy wrasses, flasher wrasses, or fish with similar coloration and body shape. Territorial displays and chasing can occur, particularly between males or in aquariums with limited swimming space.
A single specimen is appropriate for most aquariums. Experienced aquarists maintaining larger systems may successfully combine it with compatible wrasse species when adequate space, hiding areas, and thoughtful introductions are provided.
Reef Compatibility
Naoko’s Fairy Wrasse is considered reef safe and is an excellent choice for coral-dominated aquariums. It does not normally eat or damage corals, clams, or other sessile reef organisms.
As with any individual marine fish, newly introduced specimens should be observed around very small ornamental crustaceans, but this species is generally considered suitable for established reef communities.
Water Parameters
Temperature: 75–80°F
Specific Gravity: 1.024–1.026
pH: 8.1–8.4
Alkalinity: 8–12 dKH
Stable, well-maintained water quality is more important than attempting to maintain one exact value within these ranges. Avoid sudden changes in salinity, temperature, or other major parameters, particularly during acclimation.
Common Considerations
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Exceptional jumper: A secure mesh screen or tightly fitted lid is essential.
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Wrasse compatibility: May become territorial toward other fairy and flasher wrasses, especially similar-looking males.
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Active swimmer: Provide ample open swimming space in addition to secure rockwork and hiding areas.
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Frequent feeding: Benefits from multiple small meals of high-quality meaty marine foods.
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Acclimation: Newly introduced specimens may initially hide or behave cautiously before becoming confident and spending more time in open water.
