Those fish are OK for consumption. It is not desirable to look at, but it will not affect taste or you. It is recommended to trim away the bad portion of the fillet and consume as normal. I havent had any fish from there with that issue yet, but have from other lakes.
Make a trip to Chelan, Wapato, or Roses for trout/panfish/bass or swing down and fish the Wenatchee, Icicle, or Columbia for Kings!