▶️Have u ever heard an animal gets its name from a train?
⏭️Well yes,a fish whose scientific name is Harpadon sp.,popularly known as "BOMBAY DUCK" gets its name from Bombay Mail (current 12321/2 Howrah-Mumbai Mail via-Gaya)
▶️Daak is a local word for Mail and these fish were found mainly in Western Coast of India.
▶️These fishes were brought to Bengal & Bangladesh in old...
more... time as "dried fish" (Bengali term:Sutke Maach) and the train which brought them was none but BOMBAY MAIL (also called BOMBAY DAAK TRAIN)
▶️Somehow the fish was also came to be known as "BOMBAY DAAK" which eventually corrupted into "BOMBAY DUCK"
▶️Hence,Bombay Duck is NOT A DUCK,But a FISH.
(Info:Wikipedia/Elucidated by me)