California sheephead vs roughy

California sheephead

noun
  • Semicossyphus pulcher, a species of wrasse native to the eastern Pacific Ocean. 

roughy

noun
  • Any of several marine fish of the related genus Trachichthys, which have rough and spiny scales. 

  • The orange roughy, Hoplostethus atlanticus. 

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