Thanks for the reply, I just wanted to get your thoughts on it, cause here in the us we have your brown trout here, most of which are from scotish lines. Smallmouth would do well in the northern places in europe, england and maybe northern france or germany or other eastern european countries. Your right largemouths range here stops in canada somewhere not to far across the border. They might do well in some southern countries, spain, italy, or even north africa. That surprises me that they didnt do well in england, it gets colder here in pennsylvania than it does there but your water might stay a more constant temp. The water here has to be at least 72F for them to spawn. Were as the smallmouth can spawn at 70F and does so even in what we call trout water here. I am not sure if sunfish would even do well there if they had no luck with largemouth.