Thalassoma lucasanum 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Perciformes Labridae

Scientific Name: Thalassoma lucasanum (Gill, 1862)
Common Name(s):
English Cortez Rainbow Wrasse
Spanish Arcoiris De Cortes, Vieja Arco Iris, Vieja De Cortes, Vieja De Cortez
Julis lucasanus Gill, 1862

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2010
Date Assessed: 2007-05-23
Needs updating
Assessor(s): Allen, G.R., Robertson, R.D., Edgar, G., Rivera, F., Zapata, F., Merlen, G., Barraza, E., Victor, B. & Medina, B.
Reviewer(s): Collen, B., Richman, N., Beresford, A., Chenery, A. & Ram, M.
Contributor(s): De Silva, R., Milligan, H., Lutz, M., Batchelor, A., Jopling, B., Kemp, K., Lewis, S., Lintott, P., Sears, J., Wilson, P., Smith, J. & Livingston, F.
Thalassoma lucasanum has been assessed as Least Concern. This species is a small abundant wrasse in the in the eastern Pacific. It is not fished for consumption, but may be collected for aquarium trade. There are no major threats known.

Geographic Range [top]

Range Description:Thalassoma lucasanum is found in southern Baja and the Central Gulf of California to Ecuador. It is also known from all the offshore islands except for Clipperton.
Countries occurrence:
Colombia; Costa Rica; Ecuador (Ecuador (mainland), Galápagos); El Salvador; Guatemala; Honduras; Mexico; Nicaragua; Panama
FAO Marine Fishing Areas:
Pacific – eastern central; Pacific – southeast
Additional data:
Lower depth limit (metres):45
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Thalassoma lucasanum is abundant but there are no specific estimates of population (J.H. Choat, pers. comm. 2008 as pers. comm. from R. Robertson).
Current Population Trend:Stable
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Thalassoma lucasanum forms aggregations that feed on plankton around rocky and coral reefs to depths of 45 m. It also feeds on benthic crustaceans, and fish eggs; and the young sometimes "clean" parasites from other fishes. It is a pelagic spawner, and sex reversal is completed in 2–6 weeks (Sadovy and Shapiro 1987; Warner 1982).

Use and Trade [top]

Use and Trade: There is some evidence that this species is taken for the aquarium trade (J.H. Choat, pers. comm. 2008 as pers. comm. from R.Robertson).

Threats [top]

Major Threat(s): There are no major threats to Thalassoma lucasanum. It could possibly be collected for the aquarium trade.

Conservation Actions [top]

Conservation Actions: There are no species-specific conservation measures known for Thalassoma lucasanum. This species distribution overlaps with several marine protected areas.

Citation: Allen, G.R., Robertson, R.D., Edgar, G., Rivera, F., Zapata, F., Merlen, G., Barraza, E., Victor, B. & Medina, B. 2010. Thalassoma lucasanum. The IUCN Red List of Threatened Species 2010: e.T154954A4676318. . Downloaded on 20 September 2018.
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