Species description

Care, breeding and tankmates

Fish profile

Temperament

Aggressive

The Cirrhilabrus filamentosus is widely known for its peaceful and somewhat timid demeanor. They make excellent additions to peaceful community tanks but can be easily intimidated by large, aggressive species. When kept in a suitable environment, they are incredibly active and outgoing, providing constant movement and vibrant flashes of color.

Diet

Carnivore

In the wild, the Cirrhilabrus filamentosus is predominantly a zooplanktivore that feeds continuously in the water column. In captivity, it adapts readily to a varied diet consisting of high-quality marine flakes, pellets, and frozen foods. Providing enriched mysis shrimp, brine shrimp, and Calanus will help maintain its vibrant coloration and overall health.

Sex ratio

Solitary

A proper harem structure is the most natural way to keep the Cirrhilabrus filamentosus. It is generally recommended to keep one male with several females to disperse any potential aggression. Keeping multiple males of the same species usually results in intense fighting unless the aquarium is exceptionally large with ample hiding spaces.

Feeding frequency

Twice daily

Due to its active nature and small stomach, the Cirrhilabrus filamentosus should be fed small amounts multiple times a day. Two to three feedings per day are generally recommended to keep them in optimal condition. Infrequent feeding may lead to weight loss and a weakened immune system over time.

Bioload

The Cirrhilabrus filamentosus generally has a moderate bioload. These are highly active fish that require frequent feedings to sustain their high metabolic rate. Consequently, this leads to a proportional amount of waste being produced in the aquarium. Proper filtration and regular water changes are essential to maintain the pristine water quality they need.

Flow

Moderate

The Cirrhilabrus filamentosus prefers moderate to strong water movement in the aquarium. This flow simulates their natural reef environment and encourages their natural swimming and foraging behaviors. Ensuring adequate flow also helps keep their preferred zooplankton foods suspended in the water column longer.

Jump risk

Yes

There is an extremely high risk of jumping associated with the Cirrhilabrus filamentosus. They are easily startled by sudden movements, changes in lighting, or aggressive tank mates, which often results in them darting towards the surface. A tight-fitting lid or fine mesh screen is absolutely mandatory to prevent them from leaping out of the aquarium.

Reproduction

Oviparous

Like most wrasses, the Cirrhilabrus filamentosus is a protogynous hermaphrodite, meaning all individuals are born female. As they mature, the dominant female in a group will undergo a transformation into a male. Breeding in captivity is rare due to the complex pelagic larval stage, which requires specialized food and rearing conditions.

Compatibility & tankmates

Peaceful

The Cirrhilabrus filamentosus is typically considered reef safe and a peaceful community fish. It will not bother corals, clams, or most ornamental invertebrates found in a reef tank. However, caution should be exercised when mixing them with other fairy wrasses or flasher wrasses, as males can become territorial towards similar species.

Tank level

Top/Middle

The Cirrhilabrus filamentosus is primarily a mid-water swimmer that spends the majority of its time actively navigating the open water column. It will frequently dart in and out of the rockwork while searching for food or seeking refuge. At night, they secrete a mucus cocoon and sleep wedged within the crevices of the live rock.