Features

Daily briefingAI fishing guideWeather and windTides and solunarWater conditionsDepth contoursHabitat layersMaps and spotsCobia CameraBites and ReelsAuthentic vs ImportedTackle boxWhat to throwSlamsCrownsFishdex™Strike PointsCommunity and DMsSpot privacyRegulationsStrike Zones

Learn

How to read a tide chartBarometric pressureSolunar theoryWater temperatureStructure and depthWind direction

Company

How it worksBrowse the Fishdex™Tackle libraryCompeteSlamsCommunityAboutFAQPressSupportGet Cobia
Margined Madtom
Common

Margined Madtom

Noturus insignis

A small freshwater catfish species native to eastern North America, characterized by its dark margins on the fins. Part of the madtom group of catfishes known for their venomous pectoral spines.

The record

Margined Madtom at a glance

Scientific name
Noturus insignis
Typical size
2-4 inches
Water
Freshwater
Habitat
Freshwater
Rarity in the Fishdex™
Common
Where it lives

Habitat

Found in rocky riffles and runs of clear, flowing streams and small rivers. Rarely targeted by anglers due to small size, but occasionally caught incidentally while fishing for other species using small baits near rocky bottom areas.

Catch one and it is yours

Log a margined madtom through the Cobia Camera and this entry fills in with your photo, your personal best, and the exact conditions on the day. The app also carries the slot and season rules for wherever you are standing.

How the Fishdex™ works
Questions

Margined Madtom questions people ask

Margined Madtom is Noturus insignis.

A typical margined madtom runs 2-4 inches. Cobia records the length and weight of every margined madtom you log and keeps your personal best on its Fishdex entry.

Found in rocky riffles and runs of clear, flowing streams and small rivers. Rarely targeted by anglers due to small size, but occasionally caught incidentally while fishing for other species using small baits near rocky bottom areas. It is a fresh water species, filed under freshwater in the Fishdex.

Yes. Log one through the Cobia Camera and this entry fills in with your own photo, your personal best, and the conditions on the day you caught it. The app also carries the slot limits and season dates for wherever you are standing. It is free.

Free on iPhone

Tomorrow morning starts tonight

Set your home water, pick a drive radius, and wake up to a plan.

Download Cobia on the App Store Android coming soon

iPhone, iOS 17 or later. Setup takes about a minute.