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Aquamarine Wrasse

Cirrhilabrus aquamarinus

Native to Indonesia, the Aquamarine Wrasse displays shimmering blue tones. It thrives in a 200L reef setup with strong filtration, requiring a varied plankton diet and a completely enclosed canopy.

Taxonomy
Class:Actinopteri
Order:Perciformes
Family:Labridae
Subfamily:Cirrhilabrinae
Genus:Cirrhilabrus
Species:Cirrhilabrus aquamarinus

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Water Temperature

22 - 26 °C

pH Value

8.1 - 8.4

Water type

Marine

Tank level

Middle

Adult size

8 cm

Minimum tank volume

>= 120 L

Minimum group

>= 1

Species description

Geographical Origin and Habitat: Cirrhilabrus aquamarinus is native to the coral reefs of the central Indo-Pacific, specifically concentrated around eastern Indonesia and the Sunda Islands. It occupies outer reef slopes, drop-offs, and rubble zones at depths ranging from 30 to 130 feet (10-40 meters), where water movement is moderate to strong and zooplankton is abundant.
Taxonomy and Morphology: Belonging to the family Labridae and the genus Cirrhilabrus, this species is a classic member of the fairy wrasses. It was recently separated from related species based on distinct coloration patterns and meristic traits. It features an elongated, torpedo-shaped body built for rapid swimming, with large eyes for capturing prey.
Social Behavior: Highly active and diurnal, the Aquamarine Wrasse spends the day swimming in the water column. In the wild, they form large aggregations containing multiple females and a dominant male. They are generally peaceful toward other reef fish but males will display aggressively towards rivals of their own species or genus.
Coloration and Sexual Dimorphism: Pronounced sexual dimorphism is present. Dominant males showcase a brilliant orange-red upper body that transitions into an iridescent aquamarine-blue along the flanks and belly, with elaborate markings on the fins. Females are smaller, exhibiting a mostly uniform orange or reddish-pink hue.

Care, breeding and tankmates

Aquarium Setup: An aquarium of at least 55-70 gallons (200-250 liters) is required to allow sufficient swimming space. The tank should feature plenty of live rock arranged to create caves, archways, and dark overhangs where the wrasse can sleep or retreat. A tight-fitting lid or mesh screen is absolutely mandatory, as they jump when startled.
Diet and Feeding: Being planktivores, they require a meat-based diet. Feed them a variety of frozen foods such as mysis shrimp, vitamin-enriched brine shrimp, krill, and copepods at least two to three times daily. Over time, they will adapt to high-quality marine pellets and flakes, which should be offered regularly.
Water Quality: High water quality is essential. Keep temperatures stable between 75-79 °F (24-26 °C), with a pH of 8.1-8.4 and specific gravity of 1.020-1.025. Nitrates must be kept below 10-20 ppm. Strong filtration, an efficient protein skimmer, and good water circulation are needed to replicate their natural coral reef environment.
Compatibility and Cohabitation: This wrasse is 100% reef-safe and will not bother corals or sessile invertebrates. It coexists peacefully with small reef species like gobies, dartfish, and clownfish. Avoid stocking it with aggressive tankmates like triggerfish or large dottybacks, or similar-looking male fairy wrasses.
Aquarium Breeding: Breeding in captivity is extremely rare and difficult due to their spawning behavior. They are pelagic spawners, releasing gametes into the water column at dusk after a vertical dash. Rearing the pelagic larvae requires specialized setups and micro-plankton cultures that are hard to maintain at home.
Risks and Diseases: The primary risk is physical injury or death from jumping out of uncovered tanks. They are susceptible to marine ich (Cryptocaryon irritans) and velvet (Amyloodinium), particularly when stressed by aggressive tankmates or sudden changes in water parameters. Quarantining new specimens is highly advised.

Geographic Origin and Distribution

Cirrhilabrus aquamarinus is native to the coral reefs of the central Indo-Pacific, specifically concentrated around eastern Indonesia and the Sunda Islands. It occupies outer reef slopes, drop-offs, and rubble zones at depths ranging from 30 to 130 feet (10-40 meters), where water movement is moderate to strong and zooplankton is abundant.

Origin

Tropical oceans and reefsSouth and Southeast Asia

Fish profile

Temperament
Peaceful
Renowned for their wonderfully peaceful and gregarious temperament, they rarely ever bother other species within the aquarium setting. They can sometimes be slightly shy when initially introduced, demanding a peaceful acclimation period away from aggressive bullies. Once fully settled and comfortable, their bold, constantly active, and visually striking swimming patterns bring incredible life to the display tank. Although males may actively flash and chase each other to establish dominance, this behavior is rarely harmful if the tank is sufficiently spacious.
Diet
Carnivore
They are quintessential zooplanktivores in the wild, spending their days actively plucking tiny crustaceans and plankton directly from the water currents. In the home aquarium, they eagerly accept a remarkably wide variety of meaty foods, including mysis shrimp, brine shrimp, and high-quality marine flakes. Providing a diversified diet enhanced with vitamins and color-enhancing additives is crucial for maintaining their brilliantly intense coloration. They are generally aggressive eaters and will readily learn to feed from the aquarist's hand or an automated feeder.
Sex ratio
Harem
They are fascinating protogynous hermaphrodites, meaning every single individual is born female and dominant females will naturally transition into males if the social hierarchy dictates. They are exceptionally well-suited to being kept in beautiful harems consisting of one spectacular male and several subordinate females. Keeping multiple males of the precise same species is generally unadvised as it can trigger severe, potentially lethal territorial disputes. Interestingly, the mere presence of multiple females often encourages the lone male to continuously display his most vibrant, terminal-phase colors.
Feeding frequency
Twice daily
To optimally sustain their high energy levels and rapid metabolism, they require frequent feedings of small portions throughout the day. It is highly recommended to feed them at least two to three times daily with a mix of high-quality frozen and prepared foods. Insufficient feeding frequency can quickly lead to noticeable weight loss and a distressing fading of their normally vibrant colors. Using an automatic feeder to dispense small amounts of pellets during the day can greatly assist in meeting their immense dietary needs.
Bioload
Fairy wrasses contribute a moderate bioload to the aquarium system, primarily due to their highly active swimming nature and correspondingly high metabolic requirements. They consume significant amounts of food daily, which naturally translates into regular waste production. A capable biological filtration setup combined with a highly efficient protein skimmer is highly recommended to process their organic output. Maintaining a strict schedule of regular water changes is essential to keep nitrate and phosphate levels well within acceptable reef parameters.
Flow
Strong
Coming from highly dynamic and energetic reef environments, they strongly prefer moderate to high water flow within the aquarium. Vigorous currents mimic their natural zooplankton-rich habitats and stimulate their natural, elegant swimming behaviors in the open water. Good circulation also ensures the water is highly oxygenated, which is absolutely vital for such active and fast-paced fish. Wavemakers should be utilized to create varied, turbulent flow patterns that prevent stagnant detritus buildup.
Jump risk
Yes
They possess a profound and well-documented tendency to jump out of the aquarium, especially when frightened, newly introduced, or chased by tank mates. Their incredible swimming speed easily translates into airborne leaps, making them one of the highest jump-risk species available in the hobby. A completely tight-fitting lid, completely enclosed canopy, or perfectly customized mesh screen is a non-negotiable, absolute requirement for keeping them. Even tiny gaps around return pipes or overflow boxes must be secured to prevent a tragic, fatal escape.
Reproduction
Oviparous
They are pelagic spawners that engage in a stunning, complex, and highly coordinated upward mating dance toward the water's surface at dusk. The male dramatically flashes his most brilliant, iridescent colors to court females before simultaneously releasing gametes into the swift water column. While these breathtaking spawning behaviors are frequently observed in spacious home aquariums, successfully raising the fry is nearly impossible. The microscopic pelagic larvae require incredibly specialized rotifer diets and immense, highly specialized rearing vessels to survive past the first week.
Compatibility & tankmates
Peaceful
Known for their wonderfully peaceful and completely reef-safe demeanor, they are a phenomenal addition to most community marine aquariums. They generally ignore corals, sessile invertebrates, and ornamental shrimp, focusing their attention entirely on the water column. While highly compatible with a vast array of peaceful tank mates, males of the same or closely related species may exhibit flashy, harmless aggression. Mixing different species of fairy wrasses is often successful if they are introduced simultaneously or into a sufficiently large aquarium.
Tank level
Middle
They are intensely active fish that predominantly inhabit the middle and upper levels of the aquarium's open water column. They are almost constantly in motion, gracefully weaving through the water as they scan for floating morsels of zooplankton. When night falls or when severely frightened, they will rapidly retreat downward to spin a protective, transparent mucus cocoon in the rockwork crevices. Providing ample, unobstructed swimming space above the aquascape is absolutely critical for their physical health and behavioral wellbeing.

Window to the official scientific data of the species

Data synced on: 06/15/2026

Scientific Parameters & Models

Trophic level
3.4 ± 0.4 se
Resilience
High (less than 15 months)
Phylogenetic uniqueness (PD50)
0.5
Bayesian Length-Weight
a = 0.01072, b = 3.03
VulnerabilityLow vulnerability (10 / 100)

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

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Variants and close relatives

Same atlas type, nearby scientific identity, genus, or family.

African Lined Wrasse

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Beau's Fairy Wrasse

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Brian Greene's Fairy Wrasse

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Bronze Fairy Wrasse

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Conde's wrasse

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Deep-water Wrasse

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Dotted wrasse

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Filament-finned wrasse

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Flame wrasse

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Katherine's fairy wrasse

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Kato's Fairy Wrasse

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Magma Wrasse

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Marjorie's Wrasse

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Mutant Wrasse

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Naoko's Fairy Wrasse

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Cirrhilabrus naokoae

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Pyle's fairy wrasse

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Similar care

Cards with similar requirements, difficulty, habitat, and husbandry profile.

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Purple-boned Fairy Wrasse

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Orange-back Fairy Wrasse

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Red-scaled Fairy Wrasse

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Red-fin Fairy Wrasse

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Crescent-tail Hogfish

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Scott's wrasse

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Earle's Fairy Wrasse

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Ruby fairy wrasse

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Claire's Fairy Wrasse

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Labout's Fairy Wrasse

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Yellowband Wrasse

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Last updated: 06/30/2026
Aquamarine Wrasse (Cirrhilabrus aquamarinus) Care Guide & Tank Setup | Atlarium