Watch the Catfish online guitar lesson by Jeff McErlain from Blues Guitar Fakebook: Rhythm Vol. 2

This song lyrically is a great example of a theme used throughout the blues. Muddy called it "Rollin' Stone Blues" in 1950, but it's roots reach back to the 1920's with the "Fishin' Blues" theme:

Well, I wish I was a catfish,
Swimmin' in deep, blue sea
I would have all you good lookin' women,
Fishin', fishin' after me