dogfish vs mudfish

dogfish

noun
  • a catshark, any shark from family Scyliorhinidae 

  • Ginglymostoma cirratum 

  • especially those from the family Squalidae 

  • a kitefin shark, any shark from family Dalatiidae 

  • Scyliorhinus canicula or Scyliorhinus stellaris 

  • Squalus suckleyi 

  • Ginglymostoma cirratum or Mustelus canis 

  • Squalus acanthias, Squalus blainville, Squalus megalops, or Squalus mitsukurii 

  • Mustelus canis 

  • The bowfin, Amia calva. 

  • Scyliorhinus canicula 

  • Bodianus rufus 

mudfish

noun
  • Chrysichthys nigrodigitatus (bagrid catfish) 

  • Clarias spp., including Clarias anguillaris, Clarias gariepinus, Clarias agboyiensis, Clarias leviceps 

  • Channa striata (striped snakehead) 

  • Heterobranchus didorsalis (African catfish) 

  • Clarotes laticeps (widehead catfish) 

  • Protopterus annectens (West African lungfish) 

  • All species of Neochanna 

How often have the words dogfish and mudfish occurred in a corpus of books? (source: Google Ngram Viewer )