Like i said in the last part of the tiger trout thread, I didn't know that brook and browns were non native. So first I will make my point, then I will ask a question. In some places, like many of the high lakes, there were no trout prior to stocking since most trout don't reproduce in still water and we don't have natural warm water fish in high lakes. So, places where brook trout exist exclusively, they aren't really taking the place of natives, they are instead providing a brand new fishery.
OK now the question part. What species of fish are native and non native in Oregon?