Originally Posted by
tweedwolfscream
I think the answer is yes, basically, in fact I think the area to which they're non-native extends a lot farther south than that. But the limit of their natural range isn't completely clear, and in any case "invasive" is somewhat subjective... though I would say there's a strong case to call them invasive in many waters to which they've been introduced. For example I don't understand why in Algonquin Park, where lake-dwelling brook trout are a major conservation focus and non-native smallmouth bass their main threat, they don't open smallie season in late April when the sanctuary restriction ends on the park.