Widemouth blindcat (Satan eurystomus)

Scientific name: Satan eurystomus Hubbs & Bailey, 1947

The Widemouth blindcat (Satan eurystomus) is a freshwater fish of the family Ictaluridae. Native range: North America, 5 artesian wells penetrating San Antonio Pool of Edwards Aquifer in and near San Antonio, Bexar County in Texas, USA.

Biology

Occurs in subterranean waters. Threatened by groundwater pollution.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name: Satan eurystomus
Family: Ictaluridae (North American freshwater catfishes)
Order: Siluriformes (Catfish)
Class: Actinopterygii (Ray-finned fishes)
Maximum length: 13.7
Common length: 8.7
Depth range: 305–582 m (1001–1909 ft)
Environment: Freshwater; bathydemersal; depth range 305 - 582 m
Climate: Deep-water
Distribution: North America: 5 artesian wells penetrating San Antonio Pool of Edwards Aquifer in and near San Antonio, Bexar County in Texas, USA.
Conservation status (IUCN): Vulnerable (VU) (D2)
Threat to humans: Harmless
Uses: Fisheries: of no interest
Resilience: Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

Last updated 27 September 2026