Do children receive a discount when travelling on the Matterhorn Gotthard Bahn?

Children up to 5.99 years old do not need a ticket and travel for free. Children between 6 and 15.99 years old need a half-fare ticket. When accompanied by an adult, children aged 6 to 15.99 travel for free with a Junior Card, Children's Co-Travelcard, or Swiss Travel Family Card.