The "Giant Prehistoric Minnow"

Years ago, I came across Lost Legends of the West, by Williams & Pepper (1970). They briefly mention the story of a man in the early 1960s who caught a "giant prehistoric minnow" in Lake Mojave, which excited wildlife officials. The story is repeated in the 2007 book, Weird Las Vegas and Nevada. When I posed the question of the species of the fish on the old CZ list in 1999 (actually, I see that Matt Bille had previously queried on the subject there), Jack "Rabbit" noted that it was probably the Colorado squawfish, Ptychocheilus lucius (now called the Colorado pikeminnow). With recent advances in search capabilities, it's now possible to confirm this identification, and I can point to a closer source to the story. Desert Magazine from August 1963 gives a few details in its article on Lake Mojave. The court battle (with victory for the fisherman) for the 1960s fish's remains (noted in Lost Legends) isn't mentioned, so I am uncertain as to whether it is apocryphal. Today, of course, there would be no legal grounds for possession of an endangered fish, but as Federal protection wasn't even available until the ESA in 1973, I suppose such a court case could have happened.