Sleeper Goby or Water Cow.
100% not Bowfin (tail nor jaw are close).
I know next to nothing about the "snakehead" but the rounded shape of the head makes this an easy ID for a blindman. Not a snowflakes chance in HADES from basic reading I have done on the DNR site to differentiate the S.H. from the Bowfin, that a roundhead as in the picture has anything to do with ANY of the like 70 - 80 species of Snakehead.