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💧 Freshwater Data Deficient 🌡️ Temperate

Iwame trout

Oncorhynchus iwame Kimura & Nakamura, 1961
Max Length
25 cm
Max Weight
-
Lifespan
-
Trophic Level
3.6
Depth
-
Climate
Temperate
Resilience
Medium
Vulnerability
36.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Iwame trout (Oncorhynchus iwame), first described by Kimura & Nakamura, 1961 is a medium-sized fish in the family Salmonidae (order Salmoniformes). Adults typically reach 25.00 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Temperate waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Data Deficient.

Scientific Name
Oncorhynchus iwame
Authority
Kimura & Nakamura, 1961
Habitat
Freshwater
Climate
Temperate
IUCN Status
DD
Max Length
25 cm
Trophic Level
3.6
Resilience
Medium
Vulnerability
36.00/100
Migration
Non-migratory
Salinity
0–0.5 ppt

🐟 Physical Description

Physical description for Iwame trout is currently being compiled.

🌀 Behaviour

Behavioural data for Iwame trout is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 🪺 Nest Builder 🛡️ Egg Guarder
Spawning Season
spring
Spawn Location
Nest
Fertilization
External

Reproductive strategy: synchronous ovarian organization, determinate fecundity .

🌍 Habitat & Distribution

Freshwater; demersal; non-migratory . Temperate; ? - 19°C found in Ôno River, the Niyodo River, the Inabe River, the Ibi River, the Sakawa River, and the Hananuki River (Ref.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Migration
Non-migratory
Trophic Level
3.6±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00457 × L3.1 (TL)
Max TL
25cm

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
1996

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
36.00/100
Moderate vulnerability
Trophic Level
3.6
Predator
Climate Zone
Temperate
Described By
Kimura & Nakamura, 1961

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