Interesting catch! It's always fun to add a new (or should I say very old?) species to the life list. I remember several years ago someone caught a bowfin while ice fishing in a lake in my town. The species is not native to that lake and they speculated that someone had netted some baitfish from another body of water and got a juvie bowfin in the mix, and then dumped the leftover bait into the lake here. Good thing they didn't release a male and female so they could breed!