I mentioned crawdads on another thread the other day, very easy to catch if you’re up to getting a little wet.
And most static water has some form of bluegill or crappie type fish. They can be a bony mess, but if you can work your way around the bones, they are just as nutritious if not more than tuna or salmon. Amazingly easy to catch, some will even hit a bare hook.
If you have a can of white corn, small trout will hammer a kernel of white corn on a hook. But game depts frown on using corn because the trout can’t digest it properly, or so I’ve been told...
Fry blue gill or small trout crisp and you eat the bones and all. Good too.