Labroides dimidiatus

The cleaner wrasse, with a reputation for being difficult to acclimatize, lives in couples as an adult. It feeds on live prey and it has a highly distinctive habit: it "cleans" other fish. It puts on a show in a specific part of the tank to attract them, and it then frees them of their external parasites or pieces of dead skin. When there are no males available, a female can change sex. Size: 10 cm.

• Oxymonacanthus longirostris
• Acanthurus achilles
• Ocyurus chrysurus
• Abudefduf saxatilis
• Chelmon rostratus