The DICT Development Group

  Mudfish \Mud"fish`\, n. (Zool.)
     (a) The European loach.
     (b) The bowfin ({Amia calva).
     (c) The South American lipedosiren, and the allied African
         species ({Protopterus annectens). See Lipedosiren.
     (d) The mud minnow, a fish of the genus Umbra or family
         Umbridae.
     (e) any fish which lives in muddy waters, such as the
         mummichog, a killifish.
         [1913 Webster +PJC]

  Amia \Am"i*a\, n. [L., fr. Gr. ? a kind of tunny.] (Zool.)
     A genus of fresh-water ganoid fishes, exclusively confined to
     North America; called bowfin in Lake Champlain, dogfish
     in Lake Erie, and mudfish in South Carolina, etc. See
     Bowfin.
     [1913 Webster]