Definition of needlefish
1 : any of a family (Belonidae) of elongate carnivorous chiefly marine bony fishes that are silvery with blue or green backs and have long slender jaws and sharp teeth
2 : pipefish
Learn More about needlefish
Britannica.com: Encyclopedia article about needlefish
Seen and Heard
What made you want to look up needlefish? Please tell us where you read or heard it (including the quote, if possible).