If certain fish–say the Atlantic salmon for example–are especially prized for their relative rarity and for the difficulty inherent in catching them, then we may have a new ultimate freshwater trophy: the blue perch. According to this story, Minnesota ice fishermen have recently caught four yellow perch that weren’t yellow at all, but iridescent blue. State fisheries biologist Gerald Albert, who has netted and sampled thousands of yellow perch, says that “the odds of catching [“a blue one”] are really millions to 1.”