New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

💧 Freshwater Near Threatened 🌡️ Temperate

Rough sculpin

Cottus asperrimus Rutter, 1908
Max Length
9.6 cm
Max Weight
-
Lifespan
5 yrs
Trophic Level
3.3
Depth
-
Climate
Temperate
Resilience
Medium
Vulnerability
39.00/100
Typical Length
5.5 cm
Depth Zone
demersal

📖 Overview

Adults occur in vegetated runs and riffles of creeks and small to medium rivers, usually over mud in clear, fairly deep water (1-2 m).

Scientific Name
Cottus asperrimus
Authority
Rutter, 1908
Habitat
Freshwater
Climate
Temperate
IUCN Status
NT
Max Length
9.6 cm
Lifespan
5 years
Trophic Level
3.3
Resilience
Medium
Vulnerability
39.00/100
Migration
Non-migratory
Salinity
0–0.5 ppt

🐟 Physical Description

Physical description for Rough sculpin is currently being compiled.

🌀 Behaviour

Behavioural data for Rough 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; non-migratory . Temperate; 41°N - 40°N North America: occurs only in Pit River system in Shasta and Lassen counties in California, USA.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Migration
Non-migratory
Trophic Level
3.3±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00832 × L3.16 (TL)
Max TL
9.6cm

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2011

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
39.00/100
Moderate vulnerability
Trophic Level
3.3
Predator
Climate Zone
Temperate
Described By
Rutter, 1908

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Rough sculpin ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.