Species description

Care, breeding and tankmates

Fish profile

Temperament

Active

Cirrhilabrus rubeus is an active, bold, and social fish once settled, spending the day swimming in the middle levels of the aquarium. They can be shy initially, hiding in caves for the first few days, but they quickly adapt to open-water swimming. Keeping them in a harem setup (one male with several females) encourages the male to display his intense courtship colors.

Diet

Carnivore

This species is a carnivore that primarily feeds on suspended zooplankton in the water column. In an aquarium, they should be fed high-quality frozen foods, including mysis shrimp, vitamin-enriched brine shrimp, copepods, and lobster eggs. They will also acclimate to high-quality dry pellets and flakes over time. A diverse diet is crucial for preserving the brilliant, iridescent ruby-red color of the males.

Sex ratio

Harem

Solitary or in harem (one male, multiple females).

Feeding frequency

Twice daily

Fairy wrasses like Cirrhilabrus rubeus have a high metabolic rate and require feeding two to three times daily. Offering small portions that are consumed quickly prevents excess food from decaying and raising nutrient levels in the water. Providing food at consistent intervals keeps their energy levels high and helps mitigate food-related aggression. Automated feeders are a great tool for maintaining this schedule.

Bioload

The Ruby Fairy Wrasse is a voracious eater that burns through calories very quickly as it patrols the tank. To keep their vivid colors and energetic behavior, they must be fed multiple times a day, which subsequently increases their waste output. They contribute a moderate bioload to the aquarium, making a solid biological filter and protein skimmer essential.

Flow

Strong

Cirrhilabrus rubeus prefers moderate to strong water flow, reflecting the current-swept outer reef slopes of their Maldivian and Sri Lankan habitats. Active water motion encourages their natural swimming behavior and helps keep suspended foods in the water column. Nonetheless, the aquascape should feature calm areas and rock overhangs where they can rest and sleep safely at night.

Jump risk

Yes

Like other fairy wrasses, the Ruby Fairy Wrasse possesses a highly sensitive startle reflex that sends it shooting toward the surface in panic. Whether intimidated by tankmates or sudden environmental changes, they are severe jump risks. An enclosure without a carefully secured, jump-proof lid will quickly result in the loss of this fish.

Reproduction

Oviparous

Cirrhilabrus rubeus is a protogynous hermaphrodite, with the dominant female transitioning into a male as dictated by the group's social hierarchy. They are pelagic spawners that broadcast eggs and sperm into open water after quick, vertical courtship dashes. Spawning in home aquariums is undocumented and very difficult, as rearing the microscopic pelagic larvae requires specialized live food and culture systems.

Compatibility & tankmates

Peaceful

This wrasse is peaceful, 100% reef-safe, and will not damage corals, clams, or ornamental invertebrates. It is compatible with other peaceful reef species like firefish, anthias, and small gobies. However, males can be territorial toward other male fairy wrasses of similar size or coloration. A tight-fitting screen lid is mandatory to prevent them from jumping out of the tank when startled.

Tank level

Middle/Bottom

Mid-water column.