Migrants illegally poaching Salmon in Ontario, Canada

Bowmanville Creek in Ontario, Canada, yesterday, just down the highway from me.
I called out and reported a large group like this snagging spawning King Salmon with large treble hooks in Duffins Creek at the Valley Farm Road bridge in Pickering, Ontario. They had at least 5 fish flopping on the bank. I called MNR and the Police, both said there was nothing they could do, I even went to Pickering Police station just down the road, in person, spoke to 3 cops at the desk and they informed me that they don't deal with such incidents as it's not their responsibility, and there wasn't anything they could do.
I don't even bother anymore, these criminals have get out of jail free cards, it's pointless.