Satsukimasu salmon

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Satsukimasu salmon
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Salmoniformes
Family: Salmonidae
Genus: Oncorhynchus
Species: O. masou
Subspecies: O. m. ishikawae
Trinomial name
Oncorhynchus masou ishikawae
Jordan & McGregor, 1925

Oncorhynchus ishikawai Jordan & McGregor, 1925

The satsukimasu salmon,1 red-spotted masu salmon2 or amago2 Amago-Trout (Oncorhynchus masou ishikawae) is a salmonid fish in the Pacific salmon genus Oncorhynchus. It is endemic to Japan.

It was initially described as a distinct species and was cited as such by IUCN,1 but it is more lately often considered a subspecies of the masu salmon or seema (Oncorhynchus masou).2 Others, including FishBase,3 and Catalog of Fishes4 do not consider it taxonomically distinct from O. masou masou.

The Iwame trout in turn was recently confirmed to refer in part to an unspotted recessive morph of the amago.2


  1. ^ a b Kottelat, M. 1996. Oncorhynchus ishikawai. 2010 IUCN Red List of Threatened Species. Downloaded on 18 June 2010.
  2. ^ a b c d Kano, Y., Shimizu, Y., Kondou, K. 2006. Sympatric, Simultaneous, and Random Mating Between Markless Trout (Iwame; Oncorhynchus iwame) and Red-spotted Masu Salmon (Amago; Oncorhynchus masou ishikawae). Zoological Science 23:71-77. doi:10.2108/zsj.23.71
  3. ^ Froese, Rainer, and Daniel Pauly, eds. (2010). Oncorhynchus masou masou in FishBase. Nov 2010 version.
  4. ^ Species in the genus Oncorhynchus W. Eschmeyer: Catalog of Fishes. California Academy of Sciences. Downloaded 18 June 2010

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