Description

The Ruby Longfin Fairy Wrasse (Cirrhilabrus rubeus), also known as the Social Wrasse, is a vibrant and peaceful marine fish native to the Indo-Pacific region. Its striking coloration and active swimming behavior make it a popular choice among reef aquarium enthusiasts.

🐠 Physical Description

• Size: Reaches up to 3 inches (7.6 cm) in length.

• Coloration:

  • Males: Exhibit a vivid ruby red head with magenta to violet bodies, often accented by electric blue or purple flashes on their fins.

  • Females: Display more subdued tones with softer red or pink hues and less contrast, along with shorter, rounded fins.

🧪 Aquarium Care Requirements

• Minimum Tank Size: 55 gallons (208 liters).

• Water Parameters:

  • Temperature: 72–78°F (22–26°C).

  • pH: 8.1–8.4.

  • Salinity: 1.020–1.025 SG.

  • Alkalinity: 8–12 dKH.

• Tank Setup:

  • Provide ample live rock with caves and crevices for hiding.

  • Ensure a tight-fitting lid, as they are known jumpers.

  • They do not bury themselves in the sand at night but may wedge into rock crevices or form a mucus cocoon for protection while sleeping.

🥗 Diet and Feeding

• Diet: Carnivorous, primarily feeding on small crustaceans in the wild.

• In Captivity:

  • Offer a varied diet of enriched meaty foods such as mysis shrimp, brine shrimp, and finely chopped seafood.

  • Supplement with high-quality flake or pellet foods.

  • Feed multiple small meals daily to meet their high metabolic needs.

🤝 Behavior and Compatibility

• Temperament: Peaceful and social; suitable for community reef tanks.

• Reef Safe: Yes; they do not harm corals or invertebrates.

• Tankmates: Compatible with other peaceful fish. Avoid housing with aggressive species that may outcompete them for food.

• Social Structure: Best kept singly or in harems with one male and multiple females. Males may display aggression towards other males of the same species.

⚠️ Special Considerations

• Acclimation: Sensitive to changes in water parameters; use a drip acclimation method to minimize stress.

• Jumping Behavior: Known to be jumpers; ensure the aquarium has a secure lid to prevent escapes.

• Sleeping Habits: At night, they may form a mucus cocoon or wedge themselves into rock crevices for protection. 

📝 Summary

The Ruby Longfin Fairy Wrasse is a stunning and active addition to reef aquariums, offering both beauty and engaging behavior. With proper care and a suitable environment, they can thrive and become a centerpiece in your marine setup.