Ontario has a two tier system of a Regular Limit licence and a Conservation license that has lower keep limits, meaning you can still keep a few fish if you want. The conservation licence is also a bit less expensive. I think Taco has the right idea with better coverage of CO's. In the 20 some odd years I lived and fished in Calgary, I was only ever checked for a licence once. With the ID issue, perhaps there could be some small written exam taken before a licence was granted. If you can't ID the fish, the regs are somewhat pointless in some instances.