rainbow trout vs tuladi

rainbow trout

noun
  • A trout of the species Oncorhynchus mykiss, that has black spots and a pink streak running along the body. 

  • The fish as food. 

tuladi

noun
  • A large lake trout, Salvelinus namaycush, found mainly in Canada and northern areas of the US. 

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