Limits are per person, per day.
Too many folks believe that limits are collective; i.e, 4 people on a boat automatically equals 100 trout.
LEGALLY, each person on that boat is only allowed a maximum of 25 trout per day.
As the example shows below, bringing three kids with you does NOT allow you to catch and keep their limit or part of their limit too.
The easy way to explain this is like this. Two guys go deer hunting. The limit is one deer per person per day. Do you think it would be legal for you to shoot two deer that day just because your buddy didn't kill one?