guppy vs minnow

guppy

noun
  • Any tiny fish. 

  • A tube holding paintballs before they are loaded into the gun. 

  • A tiny freshwater fish, Poecilia reticulata, popular in home aquariums, that usually has a plain body and black or dark blue tail for the females and a more colorful tail for the males. 

  • A hold across the palm of the hand rather than the fingertips. 

minnow

noun
  • Any small fish. 

  • A small freshwater fish of the carp family, Phoxinus phoxinus and related species. 

  • A relatively small and insignificant person or thing of relatively little consequence, importance, or value. Synonyms: small fry, small potatoes, nobody, no one 

verb
  • To fish for minnows. 

  • To fish (especially for trout) using a minnow as bait. 

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