Species Details

Details of Bicolor cleaner wrasse will be displayed below

Bicolor cleaner wr...   

Common Name: Bicolor cleaner wrasse, Bicolored cleaner wrasse, Yellow diesel wrasse
Scientific Name: Labroides bicolor
Local Name: Dhon theyofulhi mas
Dhivehi Name: ދޮންތެޔޮފުޅިމަސް
Animalia  (Kingdom)
Chordata  (Plylum)
Perciformes  (Order)
Labridae  (Family)
Labroides   (Genus)

Bicolor cleaner wrasse's description

Bicolor cleaner wrasse (Labroides bicolor) is a species of wrasse endemic to the Indo-Pacific, Indian Ocean and Pacific Ocean.

Short description - Dorsal spines (total): 9; Dorsal soft rays (total): 10-11; Anal spines: 3; Anal soft rays: 9 - 10.

Colour: Adults dark anteriorly and pale posteriorly. Females grey and pale yellow, males dark blue/ black and bright yellow. Juveniles with bright yellow dorsal stripe.

Bicolor cleaner wrasse habitat

This species inhabits coral rich areas from sub-tidal reef flats to deeper lagoons and seaward reefs, down to depths of at least 40 m (Lieske and Myers 1994, Letourner et al. 2004, Nguyen and Nguyen 2006).

Juveniles are generally solitary in deep ledges and are rarely seen cleaning. Adults tend to move over larger areas to clean, rather than waiting at fixed cleaning stations like some other cleaner wrasses (e.g. L. dimidiatus) (Kuiter 2002). It shows pronounced cleaning behaviour which only occurs during the day. Labroides bicolor is active in the daytime, and may possibly produce a protective mucous cocoon at night.

It is probably a monandric hermaphrodite, but might also undergo bi-directional sex-change (Robertson 1972, Kuwamura et al. 2002, Sadovy and Liu 2008, re L. dimidiatus). There appears to be no obvious adult colour dimorphism, the males and females having enerally the same colour pattern (though the male may exhibit a bluer head, Kuiter 2002). The juvenile colour pattern (yellow with a black stripe) is however different from that of the adults (Kuiter 2002).

It feeds on the crustacean ectoparasites of other fishes, probably including gnathiid isopods (Grutter 1997), and also on fish mucus (Masuda and Allen 1993).

Bicolor cleaner wrasse threats

There are no known major threats to this species. However, it used to be targeted in the marine aquarium fish trade but not commonly traded. Also, coral habitat degradation may have some localized impacts on this species.

Bicolor cleaner wrasse's status