Seek rare fish in northlandVANCOUVER, B. C. UP) University of British Columbia scientists will seek the mysterious popcorn” fish, said to be in the Yukon’s Peel river headwaters, dur ing this season’s collecting expeditions.Under the direction oX Dr. C. C, Lindsay, the expeditions will go into remote areas of northern B.Yukon, Alaska and Bering Sea Isdands.The popcorn” fish has been included consistently in reports from bush pilots, who say the fish has head lumps resembling popcorn.This year’s collections for the Institute of Fisheries already has yielded two specimens previously unknown in B. C. waters — the nine-spined stickleback and the emerald shinter, both found at Fort Nelson