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Jump to next section Cat-eLog Data Sheet
Scientific Name Ameiurus nebulosus  (Lesueur, 1819)
Common Names Brown Bullhead
Brun Dværgmalle (Denmark)
Type Locality Delaware River, near Philadelphia, Pennsylvania, U.S.A.
Synonym(s) Ameiurus lacustris, Ameiurus vulgaris, Amiurus catus, Amiurus nebulosus, Amiurus vulgaris, Ictalurus nebulosus, Pimelodus atrarius, Pimelodus catus, Pimelodus felis, Pimelodus nebulosus, Pimelodus vulgaris, Silurus coenosis
Pronunciation Ai MEE you russ - neb you low suss
Etymology Ameiurus: ''curtailed'' refers to the lack of a deep notch in the caudal fin. The specific epithet, nebulosus, means cloud and refers to the cloudy yellowish-brown colour.
Jump to next section Species Information
Size 500mm or 19.7" SL. Find near, nearer or same sized spp.
Identification Similar to Ameiurus melas but has 5-8 large saw like teeth on rear of pectoral spine
Sexing Females much fuller bodied during breeding season. This occurs during early spring.
General Remarks Occurs in pools and sluggish runs over soft substrates in creeks and small to large rivers. Also found in impoundments, lakes, and ponds. Has been known to bury itself in the soft sand substrate when water conditions are toxic.
Jump to next section Habitat Information
Distribution North America: Atlantic and Gulf Slope drainages from Nova Scotia and New Brunswick in Canada to Mobile Bay in Alabama in USA, and St. Lawrence-Great Lakes, Hudson Bay and Mississippi River basins from Quebec west to Saskatchewan in Canada and south to Louisiana, USA.
North American Atlantic Drainages (click on these areas to find other species found there)
Gulf Coast Drainages (click on these areas to find other species found there)
Gulf Coast Drainages, Mississippi (click on these areas to find other species found there)
North American Atlantic Drainages, Great Lakes (click on these areas to find other species found there)
North American Atlantic Drainages, Saint Lawrence (click on these areas to find other species found there)
North American Atlantic Drainages, Great Lakes (click on these areas to find other species found there)
North American Atlantic Drainages, Hudson (click on these areas to find other species found there)

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IUCN Red List Status Least Concern
pH 6.6 - 7.6
Temperature 24.5-26.0°C or 76.1-78.8°F (Show species within this range)
Other Parameters Surprisingly tolerant of water with low dissolved oxygen levels.
Jump to next section Husbandry Information
Feeding A nocturnal feeder that feeds mollusks, insects, leeches, crayfish and plankton, worms, algae, plant material, fishes and has been reported to feed on eggs, of least, cisco, herring and lake trout.
Furniture Larger, open layout aquarium with sand substrate. A couple larger driftwood logs to hide under is all that is required for refuge.
Compatibility Social with most anything they can not swallow, to be on the safe side do not house with anything less than half it's own size.
Breeding Not reported in the aquarium.
Breeding Reports There is no breeding report.
Jump to next section Further Information
Reference Mémoires du Muséum d'Histoire Naturelle, Paris v. 5, pp 149.
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Last Update 2019 Sep 14 03:41 (species record created: 2001 Apr 25 00:00)