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

💧 Freshwater Vulnerable 🌡️ Temperate

Colorado pikeminnow

Ptychocheilus lucius Girard, 1856
Max Length
180 cm
Max Weight
-
Lifespan
12 yrs
Trophic Level
2
Depth
-
Climate
Temperate
Resilience
Low
Vulnerability
87.00/100
Typical Length
52.5 cm
Depth Zone
demersal

📖 Overview

Adults inhabis pools of medium to large rivers. Large individuals usually occur in deep, flowing rocky or sandy pools .

Scientific Name
Ptychocheilus lucius
Authority
Girard, 1856
Habitat
Freshwater
Climate
Temperate
Body Shape
Elongated
IUCN Status
VU
Max Length
180 cm
Lifespan
12 years
Trophic Level
2
Resilience
Low
Vulnerability
87.00/100
Migration
Potamodromous
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Anal soft rays: 9. Scales very small with 76-97, usually 80-87 scales on lateral line and 18-23 scales above lateral line; dorsal fin usually with 9 rays; anal fin with 9 rays .: elongated.

🌀 Behaviour

Behavioural data for Colorado pikeminnow is currently being reviewed.

🦐 Diet

algae
aquatic plants
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; demersal; potamodromous . Temperate; 42°N - 31°N North America: Colorado River drainage in USA (Wyoming, Colorado, Utah, New Mexico, Arizona, Nevada and California) and Mexico.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Migration
Potamodromous
Trophic Level
2±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
180cm
Anal Rays
9

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2012

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
87.00/100
Very High vulnerability
Trophic Level
2
Omnivore / Planktivore
Body Shape
Elongated
Climate Zone
Temperate
Described By
Girard, 1856

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Bigmouth Whitefish · Colorado Pikeminnow · Colorado River Salmon · Colorado River Squawfish · Colorado Squafish · Colorado squawfish · White Salmon
🌍CES jelec coloradský
🇫🇷French Poisson Squaw du Colorado
🌍LAV Kolorādo lūplidaka
🇷🇺Russian Колорадский птихохейлус
🇪🇸Spanish Pez Squaw del Colorado · carpa gigante del Colorado

🦠 Common Diseases

The following diseases are known to affect Colorado pikeminnow.

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 18 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Colorado pikeminnow ↗
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.