Pink Margin Fairy Wrasse (Cirrhilabrus Rubrimarginatus) saltwater aquarium fish

Overview:

Pink Margin Fairy Wrasse (Cirrhilabrus rubrimarginatus) is a peaceful, active marine fish that does best in a mature, stable reef aquarium. It is an excellent swimmer and needs plenty of open space, along with rockwork that creates caves and sheltered sleeping areas. A tank of at least 75 gallons is recommended for a single specimen, with larger systems preferred if keeping multiple fairy wrasses or other active fish. Provide a secure, tightly fitted lid, as this species is a strong jumper. Water quality should be pristine and consistent: temperature 74–80°F, salinity 1.023–1.026, pH 8.1–8.4, and low nitrate levels. Moderate flow and good oxygenation are beneficial, but avoid overly turbulent currents. Like other fairy wrasses, it appreciates a natural day/night cycle and may bury or wedge itself in rockwork when resting, so a sandbed is helpful though not always essential.

Diet and Feeding:

Pink Margin Fairy Wrasse is a carnivorous planktivore and should be fed a varied diet rich in small meaty foods. Offer high-quality frozen mysis shrimp, enriched brine shrimp, copepods, finely chopped seafood, and marine-specific pellets or flakes designed for carnivores. Feed small portions two to three times daily, as these fish have fast metabolisms and do poorly with infrequent feeding. Soaking foods in vitamin supplements and occasional omega-3 enrichment can help support color, immunity, and conditioning. Because this wrasse is active and constantly burns energy, underfeeding can lead to weight loss and stress, while overfeeding can degrade water quality. Watch body shape closely: a healthy individual should appear full but not bloated.

Compatibility:

This species is generally peaceful and does best with similarly tempered tankmates. It is an excellent reef community fish and is usually safe with corals and most invertebrates. Good companions include clownfish, gobies, blennies, tangs, dwarf angels with caution, chromis, and other non-aggressive wrasses. Avoid housing it with large, boisterous, or predatory fish that may intimidate it or outcompete it at feeding time. Extremely aggressive wrasses, dottybacks, triggers, groupers, and large hawkfish are poor choices. If keeping multiple fairy wrasses, introduce them carefully and provide plenty of space and visual barriers to reduce aggression. Males may display territorial behavior toward similar wrasses, especially in smaller tanks. A balanced community with calm but active fish is ideal.

Health and Quarantine:

Quarantine is strongly recommended before adding Pink Margin Fairy Wrasse to the display tank. Observe for at least 2–4 weeks for signs of marine ich, flukes, bacterial infections, rapid breathing, loss of appetite, or torn fins. This species can be sensitive to sudden salinity or temperature changes, so acclimate slowly and avoid dramatic parameter swings. Stress from shipping, poor diet, or bullying often leads to disease outbreaks, so provide a low-stress quarantine environment with hiding places and clean, stable water. Because fairy wrasses are prone to jumping, keep quarantine tanks covered as well. Once established, maintain excellent filtration, regular water changes, and varied nutrition to prevent common health problems. Early intervention and stable husbandry are the best tools for long-term success with this species.

mysis shrimp brine shrimp high-quality marine flakes/pellets
Pink Margin Fairy Wrasse is an active, midwater swimmer that spends much of the day darting through the water column and weaving in and out of live rock, so it requires ample open swimming space along with sheltering crevices and overhangs. It is generally peaceful and reef-safe, making it a good community fish, though males can be mildly territorial toward similar-looking wrasses or conspecifics, especially in smaller quarters. A minimum tank size of 75 gallons is recommended, with a layout that includes extensive rockwork, visual barriers, and multiple bolt-holes to reduce stress and limit harassment. In mixed systems, it typically coexists well with other non-aggressive reef-safe species, but should be housed with tank mates that will not outcompete or intimidate it. Like most fairy wrasses, it is carnivorous to omnivorous, feeding primarily on small zooplankton, copepods, crustacean larvae, and other tiny meaty items it picks from the water column. Regular offerings of varied frozen and prepared marine foods, along with a secure lid to prevent jumping, support long-term health and natural behavior.

FAQ

Frequently Asked Questions

About the Pink Margin Fairy Wrasse

  • How can I tell a true Pink Margin Fairy Wrasse from similar fairy wrasses in the store?
    A true Pink Margin Fairy Wrasse usually shows a slender fairy-wrasse body, a pale to rosy base color, and distinct pink to reddish margins on the dorsal, anal, and often caudal fin areas, especially in males. Males are much more colorful than females and juveniles, which can look drab or yellowish-pink. They’re often confused with other Cirrhilabrus species, so the best clues are the fin edging, overall body tone, and the fact that males intensify color as they mature. Ask for the scientific name if possible, because trade names can be inconsistent.
  • Can I keep a Pink Margin Fairy Wrasse in a reef tank with corals and ornamental shrimp?
    Yes, they are generally reef-safe and do very well in coral-only or mixed reef systems. They usually ignore corals, clams, and most invertebrates. Very small ornamental shrimp, tiny crabs, or newly molted crustaceans can sometimes be at risk with any wrasse, but Pink Margin Fairy Wrasses are not among the most aggressive invertebrate hunters. A covered tank is more important than coral compatibility, because they are expert jumpers.
  • What size tank and aquascape does a Pink Margin Fairy Wrasse need?
    For a single specimen, a tank around 75 gallons or larger is much better than a small aquarium, because this species is an active open-water swimmer. They need long swimming space, moderate flow, and plenty of rockwork with caves and overhangs for sleeping and retreating. A loose, open aquascape works better than a heavily packed rock wall. They also need a tight-fitting lid with no gaps, since they are notorious jumpers, especially when startled or when first introduced.
  • What should I feed a Pink Margin Fairy Wrasse to keep it healthy and colorful?
    They do best on frequent small feedings of varied meaty foods such as mysis shrimp, enriched brine shrimp, finely chopped seafood, copepods, and high-quality marine pellets or frozen blends. A varied diet is important for keeping their pink margins bright and their body condition strong. They are naturally active feeders and can lose weight quickly if underfed, so feeding once or twice a day is usually not enough for a newly acquired or very active individual. Using vitamin- and HUFA-enriched foods helps support long-term color and health.
  • Can I keep more than one Pink Margin Fairy Wrasse together, and will they change sex?
    You can often keep one male with multiple females in a larger system, but keeping multiple males is risky unless the tank is very large and heavily stocked with distractions and visual barriers. Like many fairy wrasses, they are protogynous hermaphrodites, meaning females can transition to males if social conditions allow. In a pair or harem setup, the dominant fish may shift sex and coloration over time. If you want to keep more than one, introduce them carefully and expect hierarchy behavior, flashing, and occasional chasing, especially during acclimation.