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This article is about the fish. For the town in New York, see Halfmoon, New York. For other uses, see Half Moon (disambiguation).
Medialuna californiensis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Kyphosidae
Subfamily: Scorpidinae
Genus: Medialuna
Species: M. californiensis
Binomial name
Medialuna californiensis
(Steindachner, 1876)
  • Scorpis californiensis Steindachner, 1876

The halfmoon, Medialuna californiensis, is a species of sea chub native to the Pacific coast of North America from Vancouver, British Columbia, to the Gulf of California. This species prefers rocky substrates or kelp forests, and can be found from the surface to a depth of 40 m (130 ft). It can reach a total length of 48 cm (19 in). This species is considered to be an excellent food fish.[2]


  1. ^ Allen, G., Robertson, R. & Lea, B. 2010. Medialuna californiensis. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. <www.iucnredlist.org>. Downloaded on 27 October 2013.
  2. ^ Froese, Rainer and Pauly, Daniel, eds. (2013). "Medialuna californiensis" in FishBase. August 2013 version.