>>1054005Yes, you can fly fish anywhere and catch anything that will eat flies, small critters or minnows, which is basically anything.
You don't need tonfish flies in cold water, though troutfags don't want to admit it.
Both bass and panfish can be taken on a fly. There's a whole separate school of thought concerning warm water fly fishing. If you want a book to read about it (fly fishermen love writing books almost as much as they love reading them), try to find a secondhand copy of "Fly Tying and Fly Fishing for Bass and Panfish" by Tom Nixon. The guy revolutionized and codified warm water tactics and patterns that work, despite not looking like "proper" flies.
>pic related, the pattern he pioneered that has since been named "the Tom Nixon Spinner" in his honor 