Common name: Blacktail wrasse

General information

Ballieu's Wrasse, scientifically known as Thalassoma ballieui, is a vibrant and active fish that adds both color and dynamism to a saltwater aquarium. This species is part of the Labridae family, which is known for the cleaning behavior exhibited by many of its members. The males of this species are particularly striking with their bright blue and green coloration and the characteristic 'flashing' behavior during courtship displays, which is where the common name 'Flasher Wrasse' originates.

Care

Ballieu's Wrasse is a hardy species that requires a well-established aquarium with plenty of live rock for hiding and hunting. They are known to jump, so a tight-fitting lid or screen is essential to prevent escape. This species is not overly aggressive but can be territorial, especially towards conspecifics or similar-looking fish. A varied diet of meaty foods, such as mysis shrimp and brine shrimp, supplemented with high-quality marine flake or pellet food, will help maintain their vibrant colors and health.

Reproduction

In the wild, Ballieu's Wrasse are protogynous hermaphrodites, meaning they are born female and can change to male if the dominant male is no longer present. In the aquarium, breeding is rare, but environmental stability and a group consisting of one male and several females can encourage natural reproductive behaviors.

Habitat

Thalassoma ballieui is native to the Central Pacific, where it inhabits outer reef slopes and lagoon reefs. They are typically found at depths ranging from 3 to 30 meters, often swimming openly in search of food or engaging in social interactions with other wrasses.