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Pylodictis olivaris  (Rafinesque, 1818)

Flathead catfish
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Pylodictis olivaris   AquaMaps   Data sources: GBIF OBIS
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Image of Pylodictis olivaris (Flathead catfish)
Pylodictis olivaris
Picture by Østergaard, T.

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: Pylodictis: Greek, pylos = mud + Greek, ichthys = fish (Ref. 45335);  olivaris: olivarus meaning olive colored (Ref. 10294).

Environment / Climate / Range Ecology

Freshwater; demersal.   Temperate; ? - 33°C (Ref. 12741); 47°N - 26°N

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 18 - 20 cm
Max length : 155 cm TL male/unsexed; (Ref. 5723); max. published weight: 55.8 kg (Ref. 40637); max. reported age: 20 years (Ref. 12193)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

North America: lower Great Lakes and Mississippi River basins from western Pennsylvania to White-Little Missouri River system in North Dakota, and south to Louisiana in the USA; Gulf Slope from Mobile Bay drainage in Georgia and Alabama, USA to Mexico. Transplanted elsewhere in USA.

Biology     Glossary (e.g. epibenthic)

Inhabit pools with logs and other debris in low-gradient to moderate-gradient, small to large rivers. Also found in lakes and impoundments. Young occur in rocky and sandy runs and riffles (Ref. 5723). Juveniles feed on aquatic insect immatures in riffle areas (Ref. 10294).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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)

Not Evaluated

Threat to humans

  Harmless




Human uses

Gamefish: yes; aquarium: public aquariums
FAO(fisheries: production; publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00396 - 0.00728), b=3.14 (3.05 - 3.23), based on LWR estimates for this species (Ref. 93245).
Trophic Level (Ref. 69278):  3.8   ±0.3 se; Based on diet studies.
Resilience (Ref. 69278):  Low, minimum population doubling time 4.5 - 14 years (tm=3-6).
Vulnerability (Ref. 59153):  High to very high vulnerability (74 of 100) .