The Margined madtom (Noturus insignis) is a freshwater fish of the family Ictaluridae that grows up to 15 cm.
Description
The margined madtom is a small catfish of the family Ictaluridae (North American catfishes) reaching about 15 cm. The smooth, brownish-yellow body has four pairs of barbels around the mouth and an adipose fin that runs almost continuously into the tail. Characteristic of the madtoms (Noturus) is a venomous spine in each pectoral fin: a prick causes a painful, burning wound. The species is native to the fresh water of eastern North America and lives in clear, flowing rivers and streams with stony bottoms. At night it searches among the stones for insect larvae, small crustaceans and worms. The male guards the eggs laid under a stone. It is sometimes used as bait.
Frequently asked questions
How do you recognise the Margined madtom?
The Margined madtom has an elongate, eel-like body, is mainly brown and shows a plain pattern.
Where does the Margined madtom live?
The Margined madtom lives in fresh water and is mostly found around stony or rocky ground.
How big does the Margined madtom get?
The Margined madtom grows to a maximum of about 15 cm. On average the species is around 4 cm.
Is the Margined madtom dangerous to humans?
The Margined madtom is venomous — handle spines with care and seek medical help after a sting if needed.
Is the Margined madtom edible?
The Margined madtom is not usually eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Noturus
More from the family Ictaluridae
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