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

💧 Freshwater Least Concern 🌡️ Temperate

Flathead chub

Platygobio gracilis Richardson, 1836
Max Length
32 cm
Max Weight
-
Lifespan
-
Trophic Level
4.2
Depth
-
Climate
Temperate
Resilience
Medium
Vulnerability
46.00/100
Typical Length
14.3 cm
Depth Zone
demersal

📖 Overview

Adults inhabit sandy runs of small to large turbid rivers . They feed mainly on terrestrial and aquatic insects, occasionally on small fishes. Spawning probably occurs from June to August .

Scientific Name
Platygobio gracilis
Authority
Richardson, 1836
Habitat
Freshwater
Climate
Temperate
Body Shape
Elongated
IUCN Status
LC
Max Length
32 cm
Trophic Level
4.2
Resilience
Medium
Vulnerability
46.00/100
Migration
Potamodromous
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

: elongated.

🌀 Behaviour

Behavioural data for Flathead chub is currently being reviewed.

🦐 Diet

Diet information for Flathead chub is currently being compiled.

🥚 Reproduction

Reproduction data for Flathead chub is currently being compiled.

🌍 Habitat & Distribution

Freshwater; demersal; potamodromous . Temperate; 70°N - 30°N North America: Mackenzie, Saskatchewan, and Lake Winnipeg drainages in Canada; Missouri-Mississippi River basin from southern Alberta in Canada and Montana to Louisiana, USA; Arkansas River drainage in USA; and upper Rio Grande (including Pecos) drainage in New Mexico, USA.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Migration
Potamodromous
Trophic Level
4.2±0.4
Food Items

terrestrial and aquatic insects, occasionally on small fishes

📐 Morphometrics

Length–Weight Relationship: W = 0.00525 × L3.1 (TL)
Max TL
32cm

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2012

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
46.00/100
Moderate-High vulnerability
Trophic Level
4.2
Apex / Top predator
Body Shape
Elongated
Climate Zone
Temperate
Described By
Richardson, 1836

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 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 Flathead chub ↗
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.