"never heard of tiger trout are they a cross breed???"
Cross between a brown and a brookie. A few occur in Alberta but it's extremely rare. I only know of one confirmed tiger trout from Alberta and it was caught by fish and wildlife many many years ago. I would like to see the AFGA request tiger trout stocking in lakes with illegal perch introductions. They're aggressive and would compete with perch better than rainbows do. Had to share that idea even if it only fits loosely into this discussion.