Scientific Name
Ameiurus nebulosus

Common Name
Brown bullhead

Biology
Dorsal spines (total): 1; Dorsal soft rays (total): 6-7; Anal spines: 1. Caudal fin with 18-19 rays.

Classification

Classified By

Lesueur, 1819

Class

Ray-finned fishes (Actinopterygii)

Order

Catfish (Siluriformes)

Family

North American freshwater catfishes (Ictaluridae)

Distribution

Region

North America

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. Introduced into several countries. Several countries report adverse ecological impact after introduction. Asia: Iran and Turkey (Ref. 39702).

Range

54°N - 25°N

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

37 °C

Depth From - meters

Unknown m

Depth To - meters

40 m

Zone

demersal

Environment

Freshwater; brackish; demersal; depth range ? - 40 m (Ref. 1998)

Trophic Level

3.42 s.e. 0.38 Based on diet studies.

Occurs in Marine / Salt water

False

Occurs in Brackish water

True

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

55.0 cm

Common Length

25.0 cm

Phylogenetic Diversity Index

PD50 = 0.5078 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: minor commercial; aquaculture: commercial; gamefish: yes

Vulnerability

Low to moderate vulnerability (30 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (K=0.47; tm=3; tmax=8)

Threat To Humans

Potential pest

IUCN Red List Status

Not Evaluated