Your friend is pulling your leg. That is a Firewood Catfish aka Shovelnose Catfish from South America. I know that your friend did not catch that fish because I know all about that picture it was pulled directly from my website. Here is the page: http://www.thejump.net/id/firewood-catfish.htm
That catfish was caught in California and was probably an aquarium pet that was released after it outgrew its aquarium.