minnow \min"now\, n. oe. menow, cf. as. myne; also oe. menuse,
   of. menuise small fish; akin to e. minish, minute. written
   also minow.
   1913 webster
   1. zool. a small european fresh-water cyprinoid fish
      phoxinus laevis, formerly leuciscus phoxinus;
      sometimes applied also to the young of larger kinds; --
      called also minim and minny. the name is also applied
      to several allied american species, of the genera
      phoxinus, notropis, or minnilus, and rhinichthys.
      1913 webster

   2. zool. any of numerous small american cyprinodont fishes
      of the genus fundulus, and related genera. they live
      both in fresh and in salt water. called also killifish,
      minny, and mummichog.
      1913 webster
see also:
minow phoxinus laevis leuciscus phoxinus minim minny phoxinus 
notropis minnilus rhinichthys fundulus killifish 
mummichog 

mummichog \mum"michog\, n. amer. indian name. zool.
   any one of several species of small american cyprinodont
   fishes of the genus fundulus, and of allied genera; the
   killifishes; -- called also minnow. written also
   mummychog, mummachog.
   1913 webster
see also:
fundulus minnow mummychog mummachog 

mummichog
     n : silver-and-black killifish of saltwater marshes along the
         atlantic coast of the united states syn: fundulus
         heteroclitus
see also:
fundulus heteroclitus