Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Ictaluridae
(North American freshwater catfishes)
Etymology: Ameiurus: Greek, a = without + Greek, meiouros, -os, -on = without tail (Ref. 45335); natalis: natalis, meaning with large buttocks (referring to the large nuchal humps of mature males) (Ref. 10294).
Environment / Climate / Range
Freshwater; demersal; depth range 10 - ? m. Temperate; 5°C - 15°C (Ref. 13614); 42°N - 19°N
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 47.0 cm TL male/unsexed; (Ref. 5723); common length : 22.5 cm TL male/unsexed; (Ref. 12193); max. published weight: 1.9 kg (Ref. 4699); max. reported age: 4 years (Ref. 72462)
North America: Atlantic and Gulf slope drainages from New York to northern Mexico, and St. Lawrence-Great Lakes and Mississippi river basins from southern Quebec west to central North Dakota, and south to the Gulf. At least one country reports adverse ecological impact after introduction.
Pools, backwaters, and sluggish current over soft substrate in creeks and small to large rivers; oxbows, ponds, and impoundments (Ref. 5723, 10294).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. (Ref. 5723)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Potential pest (Ref. 13686)
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00604 - 0.01816), b=3.10 (2.94 - 3.26), based on LWR estimates for species & (Sub)Family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.46 se; Based on food items.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (tmax=4; Fec=2,000).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (46 of 100) .