Johnny Grindle

from The Collaborative International Dictionary of English v.0.48

Grindle \Grin"dle\, n. (Zool.)
   The bowfin; -- called also {Johnny Grindle}. [Local, U. S.]
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Bowfin \Bow"fin`\, n. (Zool.)
   A voracious ganoid fish ({Amia calva}) found in the fresh
   waters of the United States; the mudfish; -- called also
   {Johnny Grindle}, and {dogfish}.
   [1913 Webster]