angel shark vs goosefish

angel shark

noun
  • A member of the unusual genus Squatina of sharks with flattened bodies and broad pectoral fins resembling skates or rays. There are approximately 16 known species, which are the only members of their taxonomic genus, family and order. They occur worldwide in temperate and tropical seas. 

goosefish

noun
  • An anglerfish of the family Lophiidae. 

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