There have been several bands with this name.
These are photos from concerts where the iguanas played, so they may be of other bands that played the concert as well.
Chuck Prophet / Hannah Wicklund & The Steppin Stones / the iguanas / Ken Valdez Jul 13, 2019 Kansas City, Missouri, United States Uploaded by Tom Kennedy
the iguanas Mar 31, 2001 Philadelphia, Pennsylvania, United States Uploaded by Zimtrim
The Wailers / The Iguanas / The Meters / Olu Dara Apr 30, 2000 New Orleans, Louisiana, United States Uploaded by Br54knight
Marcia Ball / The Iguanas / Dash Rip Rock / Soul Rebels Apr 30, 1999 New Orleans, Louisiana, United States Uploaded by Br54knight
The Iguanas / John Fogerty / Jean Knight / Dr. John Apr 24, 1998 New Orleans, Louisiana, United States Uploaded by Br54knight
Bruce Hornsby / The Iguanas / Delbert McClinton / Marcia Ball May 2, 1997 New Orleans, Louisiana, United States Uploaded by Br54knight
The Meters / Phish / Roland Stone / Robert Parker / Soul Rebels / The Iguanas Apr 26, 1996 New Orleans, Louisiana, United States Uploaded by Br54knight
