Cat-eLog Right Arrow Ictaluridae Right Arrow Noturus

Jump to next section Cat-eLog Data Sheet
Scientific NameNoturus insignis  (Richardson, 1836)
Common NamesMargined Madtom
Sortfinnet Giftmalle (Denmark)
Type LocalityVicinity of Philadelphia, Pennsylvania, U.S.A.
Synonym(s)Pimelodus insigne
Pronunciationno two russ - in SIG niss
EtymologyFrom the Greek notos, meaning back and oura, meaning tail. In reference to the confluent adipose and caudal fins. The specific name comes from the Latin insignis, meaning distinguished, in reference to the distinctly marked fins.
Jump to next section Species Information
Size 150mm or 5.9" SL. Find near, nearer or same sized spp.
IdentificationYellow to slate gray above; white or light below; yellow or light gray fins. upper jaw projects beyond lower jaw. 15-21 anal rays.
SexingBreeding male with swollen lips,enlarged cephalic epaxial muscles, and large bulbous gentital papilla. Female with papilla with deep median groove ending in a small bump
General RemarksInhabits rocky riffles and runs of clear, fast creeks and small to medium rivers.
Jump to next section Habitat Information
DistributionNorth America: Eastern U.S.A., Savannah River drainage, Georgia and South Carolina, north to Hudson River drainage, New York. In upper Kanawha River (Ohio R. basin) of North Carolina, Virginia and West Virginia, where possibly native. Also, introduced into several other areas to the north and south
North American Atlantic Drainages (click on these areas to find other species found there)
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IUCN Red List StatusLeast Concern
pH6.2 - 7.0
Temperature14.0-22.0°C or 57.2-71.6°F (Show species within this range)
Other ParametersHighly oxygenated water not necessary but preferred.
Jump to next section Husbandry Information
FeedingReadily feeds on live and frozen foods. Will also adapt to flake and prepared foods for the aquarium.
FurnitureProvide sand mixed with peat moss, pvc pipes, flat rocks and vegetation.
CompatibilitySuitable for a coldwater community tank.Ideal tank mates include small-midsized North american native fishes such as darters and shiners.
Suggested TankmatesIdeal tankmates include small to midsized North American native fishes such as darters and shiners.
BreedingSpawning occurs in the months of May-August. It is difficult in the aquarium however it has been done when wild caught specimens are added to aquariums with warmer temperatures than the river or drainage system they are captured from. Nests are sited beneath flat rocks in gentle runs and in slow water above and below riffles. Eggs number 54-200 per clutch and are guarded by the male.
Jump to next section Further Information
ReferencesFauna Boreali-Americana Part 3, pp 132.
A Field Guide To Freshwater Fishes North America
North American Native Fishes for the Home Aquarium
American Aquarium Fishes
Registered Keepers(1) Silurus, (2) fishlvr, (3) Birger (k: 6), (4) Goodeid608, (5) TownForkCreek, (6) Narelle (k: 3), who also notes: "Caught by other convention attendees on the 2016 Catcon collection field trip.".

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Breeding ReportsNone.
Article - CotM 2004 July
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Last Update2013 Jul 10 20:41 (species record created: 2003 Aug 16 00:00)