AUDIE CORNISH, HOST: And now a big fish story. Last month a fisherman off the coast of Sitka, Alaska, brought in a record-breaking shortraker rock-fish. At nearly 40 pounds and three and a half feet long, the bug-eyed, bright orange beast is the biggest fish of its kind ever caught by a recreational fisherman.</s>ROBERT SIEGEL, HOST: But even more exciting was its potential age. Based on its size, state wildlife specialists estimated that the rock-fish could be about 200 years old, old enough to have hatched back when Alaska belonged to Russia, when James Madison was president.</s>AUDIE CORNISH, HOST: So they decided to find out. And how does one determine the age of a giant rock-fish? They turned to a lab in Juneau, where scientists examined its ear bones.</s>TROY TYDINGCO: They count the rings. It's very similar to what you'd have on a tree. They have annual growth rings.</s>ROBERT SIEGEL, HOST: Troy Tydingco manages sport fishing in Sitka for the Alaska Department of Fish and Game. He says this rock-fish was far from a contemporary of Kierkegaard, Dr. Livingston or Stephen Douglas.</s>TROY TYDINGCO: Yesterday morning we finally did get the age back, and this fish was actually only 64 years old.</s>AUDIE CORNISH, HOST: Barely old enough for Social Security, a contemporary of George Foreman and Wolfgang Puck. Is that still pretty old for a fish?</s>TROY TYDINGCO: For a rock-fish, especially a shortraker, that's more run of the mill.</s>ROBERT SIEGEL, HOST: So this heavyweight rock-fish was just big enough to fool them.</s>TROY TYDINGCO: Well, it was a good grower.</s>ROBERT SIEGEL, HOST: But not quick enough to be the one that got away.</s>AUDIE CORNISH, HOST: You're listening to ALL THINGS CONSIDERED from NPR News.
A nearly 40-pound rockfish caught off the southwest coast of Alaska was thought to be nearly 200 years old. The answer lay in the watery beast's ear bones, which were examined in a lab in Juneau, Alaska. Robert Siegel and Audie Cornish have more.