A pulse of sockeye swam up the Chilkoot River early this week, bolstering what was a dismal early run, but the Chilkat River still has Alaska Department of Fish and Game biologists concerned.

Fish and Game area commercial fisheries biologist Wyatt Rhea-Fournier said while he attributed last year’s record low sockeye run to over-escapement during the run’s parent year, this year’s low return has him puzzled.

“Although the sockeye return to Chilkoot Lake began slowly,…