The Collaborative International Dictionary of English v.0.48:

Komtok \Kom"tok\, n. (Zool.)
   An African freshwater fish (Protopterus annectens),
   belonging to the Dipnoi. It can breathe air by means of its
   lungs, and when waters dry up, it encases itself in a nest of
   hard mud, where it remains till the rainy season. It is used
   as food.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Lepidosiren \Lep`i*do*si"ren\ (-s[imac]"r[e^]n), n. [Gr. lepi`s
   -i`dos, a scale + seirh`n a siren.] (Zool.)
   An eel-shaped ganoid fish of the order Dipnoi, having both
   gills and lungs. It inhabits the rivers of South America. The
   name is also applied to a related African species
   (Protopterus annectens). The lepidosirens grow to a length
   of from four to six feet. Called also doko.
   [1913 Webster] Lepidote

The Collaborative International Dictionary of English v.0.48:

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]