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💧 Freshwater Least Concern 🌡️ Subtropical

Freckled madtom

Noturus nocturnus Jordan & Gilbert, 1886
Max Length
15 cm
Max Weight
Lifespan
4 yrs
Trophic Level
3.4
Depth
Climate
Subtropical
Resilience
Medium
Vulnerability
22.00/100
Typical Length
4.6 cm
Depth Zone
demersal

📖 Overview

Adults inhabit sand-gravel riffles and runs near debris and among tree roots along undercut banks in creeks to large rivers . They feed on aquatic insect immatures dominated by mayflies, caddisflies, midges, and blackflies .

Scientific Name
Noturus nocturnus
Authority
Jordan & Gilbert, 1886
Habitat
Freshwater
Climate
Subtropical
IUCN Status
LC
Max Length
15 cm
Lifespan
4 years
Trophic Level
3.4
Resilience
Medium
Vulnerability
22.00/100
Migration
Non-migratory
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Physical description for Freckled madtom is currently being compiled.

🌀 Behaviour

Behavioural data for Freckled madtom is currently being reviewed.

🦐 Diet

Diet information for Freckled madtom is currently being compiled.

🥚 Reproduction

Reproduction data for Freckled madtom is currently being compiled.

🌍 Habitat & Distribution

Freshwater; demersal; non-migratory . Subtropical; 41°N - 30°N North America: Mississippi River basin from northern Illinois to Louisiana, and from eastern Kentucky to central Kansas and Oklahoma in the USA; Gulf Slope drainages from Mobile Bay in Alabama to Guadalupe River in Texas, USA.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Migration
Non-migratory
Trophic Level
3.4±0.4
Food Items

aquatic insect immatures dominated by mayflies, caddisflies, midges, and blackflies (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00589 × L3.07 (TL)
Max TL
15cm

🌡️ 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
22.00/100
Low vulnerability
Trophic Level
3.4
Predator
Climate Zone
Subtropical
Described By
Jordan & Gilbert, 1886

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Freckled Madtom
🌍CES noturus noční
🇨🇳Chinese 夜石鮰

🗺️ Global Occurrence Map

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

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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