Fish Window Cleaning has grown to be the world's largest window cleaning company with more than 250 franchise territories in 43 states, yet we still maintain the traditional values we were founded on. We will always treat every customer as though they are our only customer. Mike Merrick founded Fish Window Cleaning in January 1978. Based on growing demand and his success, Mike realized there was a need for this service in other markets. He used his 20 years of experience to create the Fish Window Cleaning franchise system. In 1998, the first FISH franchise opened in Tampa, FL.