Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Ictaluridae
(North American freshwater catfishes)
Etymology: Ictalurus: Greek, ichtys = fish + Greek, ailouros = cat (Ref. 45335); punctatus: punctatus meaning spotted (Ref. 10294).
Environment / Climate / Range
Freshwater; benthopelagic; pH range: 6.0 - 8.0; dH range: 4 - 30; depth range 15 - ? m (Ref. 9988). Subtropical; 10°C - 32°C (Ref. 12741); 51°N - 27°N
Length at first maturity / Size / Weight / Age
Maturity: Lm 36.0  range ? - ? cm
Max length : 132 cm TL male/unsexed; (Ref. 26550); common length : 57.0 cm SL male/unsexed; (Ref. 59043); max. published weight: 26.3 kg (Ref. 4699); max. reported age: 24 years (Ref. 59043)
Usually bluish olive, gray or black on the upper part of the body, becoming white below; dark spots usually scattered along the sides; older males dark in color, the head looking very wide when seen from the top; long barbels surrounding the mouth and the tail deeply forked (Ref. 44091).
North America: Central drainages of the United States to southern Canada and northern Mexico.
Inhabit rivers and streams and prefer clean, well oxygenated water (Ref. 9988), but also in ponds and reservoirs (Ref. 10294, 44091). Feed primarily on small fish, crustaceans (e.g. crayfish), clams and snails; also feed on aquatic insects and small mammals (Ref. 9669, 10294, 44091). Marketed fresh, smoked and frozen; eaten steamed, fried, broiled, boiled, microwaved and baked (Ref. 9988). Albino form common in the aquarium trade (Ref. 13371).
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p.
IUCN Red List Status (Ref. 90363)
Threat to humans
Potential pest (Ref. 13371)
Fisheries: highly commercial; aquaculture: commercial; gamefish: yes; aquarium: commercial
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00431 - 0.00702), b=3.10 (3.03 - 3.17), based on LWR estimates for this species (Ref. 93245
Trophic Level (Ref. 69278
): 3.9 ±0.6 se; Based on diet studies.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (K=0.06; tmax=16).
Vulnerability (Ref. 59153
): High to very high vulnerability (72 of 100) .