Oncorhynchus masou (Brevoort, 1856)
Masu salmon
Sima,  Masu salmon,  Сима
Oncorhynchus masou
photo by Kim, I.-S.

Family:  Salmonidae (Salmonids), subfamily: Salmoninae
Max. size:  79 cm TL (male/unsexed); max.weight: 10,000.0 g
Environment:  benthopelagic; depth range 0 - 200 m, anadromous
Distribution:  Northwest Pacific: Japan and adjacent waters.
Diagnosis:   
Biology:  The fluviatile form generally inhabits headwaters and often maintains a territory; it feeds mainly on insects but also on small crustaceans and fishes. The sea-run form goes downstream forming schools, and after a short stay in the brackish zone enters the sea where it feeds on small fishes and pelagic crustaceans. Oviparous (Ref. 205). Eggs are buried in unguarded nests (Ref. 205). Marketed fresh and frozen; eaten broiled and baked (Ref. 9988).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (120744)
Threat to humans:  harmless
Country info:  Anadromous and land-locked forms are distributed only along western Kamchatka, mouth of the Amur,Tym' and Poronai rivers (Ref. 26334, 593, 27681). Known from Kuril archipelago (Ref. 12218). Sakhalin, western Kamchatka (Ref. 37812). nEurRus

Entered by: Luna, Susan M. - 17.10.90
Modified by: Torres, Armi G. - 09.08.17
Checked by: Froese, Rainer - 08.03.94

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