Japan country information

Common names: Amago, Honmasu, Sakuramasu
Occurrence: native
Salinity: freshwater
Abundance: common (usually seen) | Ref: Sokolovskaya, T.G., A.S. Sokolovskii and E.I. Sobolevskii, 1998
Importance: minor commercial | Ref: FAO, 1992
Aquaculture: commercial | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from Nagara River, Honshu Island (Ref.6376), Lake Biwa (Ref. 78994) and Hokkaido (Ref. 37812). Also Ref. 12218, 27683. Category in the 2005 Red Data Book of Shiga Prefecture: important distribution (Ref. 79825). Status of threat: Near threatened (Ref. 94887).
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/ja.html
National Fisheries Authority: https://www.maff.go.jp/eindex.html
Occurrences: Occurrences Point map
Main Ref: Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Salmoniformes (Salmons) > Salmonidae (Salmonids) > Salmoninae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Saumon du Japon, Salmón japonés, Сима, ... more

Main reference

Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino. 1984. (Ref. 559)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 79.0 cm TL male/unsexed; (Ref. 56527); max. published weight: 10.0 kg (Ref. 9988)

Environment

Marine; freshwater; brackish; benthopelagic; anadromous (Ref. 51243); depth range 0 - 200 m (Ref. 50550)

Climate / Range

Temperate, preferred 6°C (Ref. 107945); 65°N - 34°N, 127°E - 158°E

Distribution

Northwest Pacific: Sea of Okhotsk and Sea of Japan; northern Japan and eastern Korea Peninsula.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

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 (Ref. 115185)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: commercial; aquaculture: commercial; gamefish: yes

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration

Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development

Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance

References
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion

Collaborators
Pictures
Stamps, Coins
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision

Tools

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Common names | Photos

Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
3.6 ±0.59 se; Based on food items.

Resilience (Ref. 69278)
Medium, minimum population doubling time 1.4 - 4.4 years (tm=4; tmax=6; Fec=1,000)

Vulnerability (Ref. 59153)
High vulnerability (55 of 100)

Price category (Ref. 80766)
High

Oncorhynchus masou masou (Brevoort, 1856)