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💧 Freshwater Least Concern 🌡️ Temperate

Torrent sculpin

Cottus rhotheus Smith, 1882
Max Length
15.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
-
Climate
Temperate
Resilience
Medium
Vulnerability
34.00/100
Typical Length
6.8 cm
Depth Zone
demersal

📖 Overview

Inhabits rubble and gravel riffles of rivers and rocky lake shores. Individuals up to 5 cm feed on planktonic crustaceans and aquatic insect larvae especially that of midges and mayflies . Larger sculpins feed on minnows and other fishes . Possibly spawns in June .

Scientific Name
Cottus rhotheus
Authority
Smith, 1882
Habitat
Freshwater
Climate
Temperate
IUCN Status
LC
Max Length
15.5 cm
Trophic Level
3.4
Resilience
Medium
Vulnerability
34.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 7 - 9; Dorsal soft rays (total): 15 - 18; Anal soft rays: 11 - 14.

🌀 Behaviour

Behavioural data for Torrent sculpin is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; demersal. Temperate; 52°N - 42°N North America: upper Fraser River drainage in British Columbia in Canada to Nehalem River in Oregon, USA (including Columbia River drainage of British Columbia in Canada, and Washington, Idaho, Montana and Oregon in the USA).

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
3.4±0.45
Food Items

planktonic crustaceans and aquatic insect larvae especially that of midges and mayflies (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00832 × L3.16 (TL)
Max TL
15.5cm
Dorsal Spines
8
Dorsal Rays
17
Anal Rays
13

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2011

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
34.00/100
Low vulnerability
Trophic Level
3.4
Predator
Climate Zone
Temperate
Described By
Smith, 1882

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Torrent sculpin
🇫🇷French chabot de torrent

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 6 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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