Here are a couple pics of the Ptychocheilus oregonensis, northern pike minnow and worlds largest true minnow, formerly known as northern squawfish before the politically correct crowd sent in the word police, I catch a lot of these and in some places there is a bounty on them. I caught one day before yesterday that was about 14" long. that is an average size but they have been caught at over 60"s and I once caught one in Washington state that was almost 4 feet long.
I don't think it is a pikeminnow.