The Cleaner Wrasse (Labroides dimidiatus) is a small, reef-dwelling fish renowned for its mutualistic relationship with other marine species. Measuring around 10 cm (4 inches) in length, it is easily identified by its elongated body and a distinctive black stripe running from the snout to the tail, set against a blue or white background.

Ecological Role:
Cleaner Wrasses play a critical role in reef ecosystems by removing ectoparasites, dead tissue, and mucus from client fish. This cleaning behavior not only benefits the host species by reducing parasite loads but also provides the wrasse with a reliable food source. Their “cleaning stations” are hotspots of biodiversity, attracting a wide range of fish seeking health maintenance.

Behavior & Adaptations:
These wrasses exhibit specialized behaviors, such as tactile stimulation and dance-like movements, to signal their cleaning services. They are highly social and often work in pairs or small groups. Their morphology—slender body and protrusible mouth—enables precise parasite removal.