 They have also appeared at the New Orleans Jazz & Heritage Festival in 2014, 2015, 2018 and 2019.From the earliest days, The Radiators used fish and fish-related themes in their iconography.They refer to their music as "Fish Head Music" and their fans call themselves "Fishheads" (similar to the term "Deadheads" used for fans of the Grateful Dead, not to be confused with "Phish Heads", fans of the American jam band Phish ).