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Halichoeres gurrobyi, a new Mauritius wrasse

By Leonard Ho - Posted Jul 08, 2016 09:00 AM
Halichoeres gurrobyi is the newest described reef wrasse. Like a lot of fish from Mauritius, H.gurrobyi is as unique as it is beautiful with its brilliant yellow stripes and striking peduncle ocellus (false eyespot near its caudal tail).
Halichoeres gurrobyi, a new Mauritius wrasse

Halichoeres gurrobyi , live in aquarium, Mauritius (Meneeka Gurroby).

Halichoeres gurrobyi is currently only known from Mauritius, the tiny island in the Indian Ocean off Madagascar. A lot of spectacular (and rather expensive) endemic fish are found here including the Cirrhilabrus sanguineus fairy wrasse and Macropharyngodon vivienae leopard wrasse (a fish I currently keep in my 176 gallon reef).

Even though now formally assayed and described, Halichoeres gurrobyi still has mysteries for us to unravel including its terminal phase (male) coloration.  Halicoeres wrasses are protogynous hermaphrodites (female to male), and as with many such wrasses, the terminal phase "super male" coloration is quite different than females and juveniles.  The largest documented H.gurrobyi is the 90mm (3.5 inch) specimen netted in the photograph below, so we still don't know for sure what the terminal phase males look like.

The new wrasse is described in the Journal of the Ocean Science Foundation.


Halichoeres gurrobyi , live individual, approx. 90 mm SL, specimen not retained, Mauritius (Meneeka Gurroby).

Author: Leonard Ho
Location: Southern California

I'm a passionate aquarist of over 30 years, a coral reef lover, and the blog editor for Advanced Aquarist. While aquarium gadgets interest me, it's really livestock (especially fish), artistry of aquariums, and "method behind the madness" processes that captivate my attention.


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