Bicolor Cleaner Wrasse

Bicolor Cleaner Wrasse (Labroides bicolor): A highly active, two‑tone cleaner wrasse found across the Indo‑Pacific, known for its yellow‑front/blue‑rear coloration and its role as a dedicated parasite‑removing cleaner on coral reefs. 🐠 Identity & Appearance Distinct two‑color pattern: bright yellow anterior and dark blue–purple posterior in adults Juveniles: yellow and black Males: often darker overall; females more gray‑black Slender, elongated body with a small terminal mouth adapted for picking parasites 🌍 Distribution & Habitat Widely distributed across the Indo‑Pacific, from East Africa to Japan, Australia, and the Central Pacific Common in coral‑rich lagoons, reef flats, and outer reef slopes Typical depth: 2–20 m, but recorded down to 40 m 🤝 Behavior & Cleaning Ecology Establishes cleaning stations, servicing a wide range of reef fish Removes ectoparasites, dead tissue, and mucus from client fish Known to clean tangs, parrotfish, surgeonfish, and even sharks and rays Performs “dance” displays to communicate and reduce client aggression 🧪 Diet Carnivorous specialist: feeds primarily on parasites and mucus from other fish In captivity, may struggle to accept prepared foods; success often depends on access to fish to clean 🏠 Aquarium Requirements Recommended minimum tank size: ~53 gallons (200 L) Salinity: 1.020–1.025 Temperature: 75–82°F (24–28°C) pH: 8.1–8.4 Needs mature systems, stable water quality, and plenty of rockwork Best kept with a variety of potential “clients” 🧬 Social Structure & Reproduction Forms harems: one dominant male with multiple females Protogynous hermaphrodite — largest female becomes male if the male is lost Oviparous; distinct pairing during breeding Captive breeding is rare and challenging 🧭 Size & Lifespan Maximum length: ~15 cm (6 inches) 🪸 Reef Compatibility Reef‑safe Peaceful, non‑aggressive Sensitive to poor water quality 🌡️ Conservation Status Listed as Least Concern by the IUCN Populations generally stable, though rare in some regions (e.g., parts of the Philippines and Malaysia)