The Pescadorian was a bar in Ambermouth. In 2013, the Fifth Doctor, Nyssa, Tegan Jovanka and Vislor Turlough visited it.
After developing an understanding of its algorithmic principles, Nyssa played on a fruit machine in the bar, using a pound donated by Tegan, and won.
Charlie Gibbs, who had been a pupil of Brendon Public School alongside Turlough, spoke to his old schoolmate and marvelled at his failure to age. This encounter convinced him to choose Turlough to carry the Watcher on his behalf.
The Doctor spoke to Bob Gell and enquired about hiring a boat. Gell related the local happenings that had killed the local fish and birds, ruining the fishing trade.
After receiving her drink, Nyssa found silicon quartz to be growing inside the glass. Having shown it to the Doctor, Nyssa, Tegan and Turlough left the bar for Ambermouth Seacology Centre. (AUDIO: Eldrad Must Die!)