Marjorie’s Fairy Wrasse (Cirrhilabrus marjorie)
• Small fish safe: ✅ Yes (peaceful and non-aggressive)
• Small invertebrate safe: ✅ Yes (reef-safe; does not harm invertebrates)
• Coral safe: ✅ Yes (does not harm corals)
• Minimum tank size: 200 litres (50 gallons)
• Adult size: Up to 5.8 cm (2.3 inches)
• Diet: Carnivorous, feeding on zooplankton and small meaty foods
• Be aware of: Prone to jumping (requires a tight-fitting lid); males display increased colouration during courtship; best kept singly or in harems with one male and multiple females
Appearance and Colouration
The Marjorie’s Fairy Wrasse is a small, vibrant species exhibiting notable sexual dimorphism:
• Males: Display a predominantly red dorsal area with a white or pale ventral side. The caudal fin is yellow and crescent-shaped, edged with black, and the dorsal fin is relatively high with a black margin.
• Females: Generally exhibit a pinkish hue with a distinctive small black spot on the caudal peduncle.
During courtship, males intensify their colours, showcasing vibrant displays to attract females.
Natural Habitat and Behaviour
Cirrhilabrus marjorie is native to the coral reefs of Fiji in the central-western Pacific Ocean. They inhabit areas rich in coral growth with rubble substrates at depths ranging from 20 to 50 metres (65 to 164 feet).
• Social Structure: Typically found in small groups, consisting of a dominant male and multiple females.
• Activity: Diurnal and active swimmers, often seen mid-water foraging for food.
• Behaviour: Peaceful and non-aggressive, making them suitable for community aquariums.
Tank Requirements and Water Parameters
• Minimum Tank Size: 200 litres (50 gallons)
• Water Parameters:
• Temperature: 24°C – 27°C (75°F – 81°F)
• pH: 8.1 – 8.4
• Specific Gravity: 1.020 – 1.025
• Aquascaping:
• Incorporate ample live rock formations to create hiding spots and replicate natural reef structures.
• Ensure open swimming spaces to accommodate their active nature.
• Lighting: Moderate to high, simulating natural reef conditions.
• Water Movement: Moderate to strong, reflecting their natural habitat.
Important Note: A secure, tight-fitting lid is essential, as Cirrhilabrus marjorie are known to jump, especially when startled.
Diet and Feeding
In their natural environment, Marjorie’s Fairy Wrasses primarily feed on zooplankton. In captivity, they adapt well to a variety of meaty foods.
• Captive Diet:
• Offer vitamin-enriched frozen mysis shrimp and brine shrimp.
• Provide high-quality marine flake and pellet foods.
• Supplement with live foods such as copepods and amphipods to encourage natural foraging behaviours.
Feeding Frequency: Feed small amounts 2-3 times daily to maintain health and vibrant colouration.
Compatibility and Social Structure
• Temperament:
• Generally peaceful and suitable for community aquariums.
• Males may display increased colouration and fin displays during courtship.
• Tank Mates:
• Compatible with other non-aggressive species such as gobies, blennies, and dwarf angelfish.
• Avoid housing with aggressive or significantly larger species that may intimidate or outcompete them.
• Social Structure:
• Best kept singly or in harems with one male and multiple females.
• Introducing multiple males in the same tank can lead to aggression unless the aquarium is sufficiently large.
Important Considerations
• Jumping Behaviour: Ensure the aquarium has a secure lid, as these wrasses are prone to leaping out of tanks.
• Acclimation: Introduce them to well-established aquariums with stable water parameters to reduce stress.
• Behavioural Displays: Males exhibit vibrant displays during courtship, enhancing the visual appeal of the aquarium.