roughy vs spottail bass

roughy

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

  • The orange roughy, Hoplostethus atlanticus. 

spottail bass

noun
  • The red drum, Sciaenops ocellatus, a marine fish with a dark spot near the tail. 

  • The freshwater snapper, Lutjanus fuscescens, a freshwater fish with a dark spot near the tail. 

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