Record-setting fish
An angling world record was set on May 22, 2005 with a 124-pound (56.2 kg) blue catfish caught in the Mississippi River,[19][20] surpassing a 121.5-pound (55.1 kg) specimen from Lake Texoma in Texas.
On June 18, 2011, a 143-pound (64.9 kg) blue catfish was landed from Kerr Lake on the Virginia-North Carolina border. On June 22, 2011, the Virginia Department of Game and Inland Fisheries certified it as the new state record.[21] The fish had a length of 57 in (145 cm) and a girth of 47 in (120 cm).
The hand-line record is a 107-pound (48.5 kg) blue catfish on 15-pound (6.8 kg)-test braided line caught June 5, 2015 on the Potomac River using a sausage with a circle hook. wikipedia info
It looks like they are native to the Rio Grande where Steve likely caught them.