Oncorhynchus masou (Brevoort, 1856)
Masu salmon
Amago,  Honmasu,  Sakuramasu,  Satsuki-masu,  Satsukimasu,  Yamame,  アマゴ,  アマゴ(サツキマス),  サクラマス(スギノコ),  サクラマス(ヤマメ),  サツキマス(アマゴ),  ヤマメ
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:  Known from north eastern Japan, western Japan and Lake Biwa (Ref. 559). Recorded from Nagara River, Honshu Island (Ref.6376), and Hokkaido (Ref. 37812). Also Ref. 12218, 27683, 78994. Category in the 2005 Red Data Book of Shiga Prefecture: important distribution (Ref. 79825). Status of threat: Near threatened (Ref. 94887).

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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