'How old is a fish?'

“Where would you look at a fish to find out its age?” asks Barney Sloan the quizmaster.
“You find the age of a fish by the lines on the scales!” says Sam in Portstewart.
“No, it’s not that,” Sean says.
“Fish are aged by a tiny bone in their nose," says Daisy in Derry.
“I know," says Tom in Armagh. "You just have to look at his birth certificate."
“Not according to Barney.”
With music from Billy Swan, Johnny Tillotson, Abba, and more.