ALTON, Ill. - It sounds like the sort of tale Mark Twain might have cooked up: A man fishing in the Mississippi River hauls in a blue catfish roughly the size of a sixth-grader. But this is no fish story. Early Sunday, Tim Pruitt caught a 124-pound blue catfish. To get a sense of just how big that is, the state record holder was a mere 85 pounds and the world record holder tipped the scales at 121 pounds, 8 ounces. Now, Pruitt, whose fish has already been weighed in the presence of a conservation police officer and measured by...