Bowfin/Dogfish… same thing, different name tags.
As for cooking them, if you cook them like you do any other fish you’re going to waste lemons. They need to be cooked more like lobster or big shrimp… all this who-hah about any given species being bad to eat is just that: who-hah. People who don’t know what they’re doing waste a life and then blame it on the fish, just like any other part of life.
If you buy into a secular view of biology, they’ve been around for some 100 million years, effectively unchanged. They’re a very primitive fish, a feature they have in common with other ancient fishes like tarpon, sturgeon, arapaima, gar and many others.
They’re air breathers and even in oxygen-rich waters they get more than 50% of their oxygen from air-breathing.
Oh, and while they’ll take a minnow or even a crawler, their favorite food is craws and grass shrimp.
Check out the Bowfin Anglers Group website… they’ve got a lot of cool stuff including recipes and how-tos.