dealfish

 
Pronunciation: /ˈdɪəlfɪʃ/

noun (plural or dealfishes)

  • a long, slender silvery fish with a dorsal fin running the length of the body, living in the NE Atlantic.
    • Trachipterus arcticus, family Trachipteridae

Origin:

mid 19th century: from deal2 in the sense 'board' (with reference to its shape) + fish1