Phish is an American rock band formed in 1983, dissolved in 2004, and reunited in 2009. It is one of the most successful live acts in popular music history, forging a popularity in concert far greater than their album sales, radio airplay, or music video presence would otherwise indicate. Phish, at the peak of their popularity in the mid- to late 1990s, consistently ranked as one of the highest-grossing concert tours in the world.