I just recieved a E-Mail back form WDFW. Tiger Muskies were planted in Green Lake in 2000. They were 14 inches long and they grow about 1 inch per month, if the forage is good, and "1" fish per acre! The legal retention length is 36 inches, so they can't reach that length until the year 2002! That fish you saw was not legal. I'd release them to fight another day and another inch or so longer. They "DO NOT REPRODUCE", but they love to eat the slower scrap fish like, squaw and perch. "Limit your Kill, not your Catch".