If you need a fishy example of the skinny weakling vs big tough SOB, coho win hands down.

Here's a beast that leaves the river in the spring as a 4-6 inch minnow that doesn't even weigh an ounce. He goes grazing in the ocean for the next 16-18 months and that eating machine returns to the river weighing anywhere from 6-20#.... talk about phenomenal growth rate.

In Alaska, virtually all the coho are 2-salts (actually 16-18 mo). Are the giant 20+ coho in the OP streams and the Satsop 3-salts?