Widemouth BlindcatLarry Page
The Widemouth Blindcat is one of four species of North American catfishes that lack eyes and dark pigments. These species are white or pink in color and are found in aquifers in Mexico and in the Edwards Plateau in Texas. In the Widemouth Blindcat, the jaw teeth are well developed, and the lips are thick at the corner of the mouth. The lower jaw is normal in shape but is slightly shorter than the upper jaw. The gill membranes are separate with a strong fold between them. The head and snout are broad and flat. The adipose fin is long and high, and the anal fin is short and rounded with 19-20 rays. The caudal fin is straight or slightly notched. The head has well developed lateral-line canals and pores. To 5 1/4 in. (13.7 cm) total length.
This species is thought to be common in the San Antonio Pool of the Edwards Aquifer in and near San Antonio in Bexar County, Texas.
Distribution of Satan eurystomus. © Larry Page
The Toothless Blindcat, Trogloglanis pattersoni, lives sympatrically with the Widemouth Blindcat, but lacks jaw teeth, has the lower jaw curved into the mouth, and has fused gill membranes.
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Florida Museum of Natural History, Gainesville, Florida, USA
Correspondence regarding this page should be directed to Larry Page at and Griffin Sheehy at
Page copyright © 2007 Larry Page
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- First online 23 May 2007
- Content changed 23 May 2007
Citing this page:
Page, Larry. 2007. Satan. Satan eurystomus http://tolweb.org/Satan_eurystomus/69917/2007.05.23 in The Tree of Life Web Project, http://tolweb.org/. Widemouth Blindcat. Version 23 May 2007 (under construction).