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IUCN threat status:

Least Concern (LC)

Comprehensive Description

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Description

  Common names: wrasse (English), vieja (Espanol), arco iris (Espanol)
 
Thalassoma lucasanum (Gill, 1862)


Cortez rainbow wrasse



Elongate, slender, compressed body; 1 pair canines at front of top jaw, 1 pair on bottom, none at rear of jaws; preopercle edge smooth; dorsal fin VIII, 13; anal rays III, 11; pectoral rays 15; tail fin concave; lateral line unbroken, but bends abruptly down near end of soft dorsal fin; scales large (26-27 on lateral line), smooth; head scaleless.


IP:  with pair of bright yellow and red stripes bordering broad dark brown to greenish stripe from snout through eye along head and body; TP:  body purplish, a broad yellow bar just behind head; tail bluish; head bluish with darker blue-green stripes below eye; pectoral yellow, with blue margin.


Maximum size to 15 cm.

Forms aggregations that feed on plankton around rocky and coral reefs, also feeds on benthic crustaceans, and fish eggs; the young sometimes "clean" parasites from other fishes.

Depth: 0-64 m.

Central Baja and the Central Gulf of California to central Peru, plus all the offshore islands except Clipperton.
   

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© Shorefishes of the tropical eastern Pacific online information system. www.stri.org/sftep

Source: Shorefishes of the Tropical Eastern Pacific Online Information System

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