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Diadromous Least Concern 🌡️ Temperate

Sakhalin sculpin

Cottus amblystomopsis Schmidt, 1904
Max Length
20.8 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
0–10 m
Climate
Temperate
Resilience
Medium
Vulnerability
41.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Sakhalin sculpin (Cottus amblystomopsis), first described by Schmidt, 1904 is a medium-sized fish in the family Cottidae (order Perciformes). Adults typically reach 20.80 cm in maximum length. It is diadromous, migrating between freshwater and marine environments during its life cycle. Recorded depth range: 0 to 10 metres. 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 Least Concern.

Scientific Name
Cottus amblystomopsis
Authority
Schmidt, 1904
Habitat
Diadromous
Climate
Temperate
Body Shape
Elongated
IUCN Status
LC
Max Length
20.8 cm
Depth Range
0–10 m
Trophic Level
3.4
Resilience
Medium
Vulnerability
41.00/100
Migration
Amphidromous
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 8 - 9; Dorsal soft rays (total): 17 - 19; Anal spines: 0; Anal soft rays: 14 - 15. : elongated.

🌀 Behaviour

Behavioural data for Sakhalin sculpin is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Marine; freshwater; brackish; demersal; amphidromous ; depth range 0 - 10 m . Temperate

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish ⬇️ Benthic
Migration
Amphidromous
Trophic Level
3.4±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00832 × L3.16 (TL)
Max TL
20.8cm
Dorsal Spines
9
Dorsal Rays
18
Anal Rays
15

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
41.00/100
Moderate vulnerability
Trophic Level
3.4
Predator
Body Shape
Elongated
Climate Zone
Temperate
Described By
Schmidt, 1904

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