luderick vs maomao

luderick

noun
  • The fish Girella tricuspidata. 

maomao

noun
  • Abudefduf abdominalis (green damselfish) 

  • Scorpis violacea (blue maomao) 

  • Scorpis aequipinnis (sea sweep) 

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