This is the first time i am hearing about it though..but this is what i read online about it...

The needlefish is considered a piscivorous fish, which is a carnivorous animal that primarily eats fish. They closely resembled the North American freshwater Gars fish family, as the needlefish has the same long, narrow jaws that are filled with sharp teeth and the elongated body. Some of the species of the needlefish are referred to as garfish even though needlefish are related distantly to that particular fish.

This slender fish ranges in length from 1.2 to 37.4 inches. They have one dorsal fin that is set back on their body. It is almost opposite to the anal fin. Of course, their most distinctive feature is their long narrow beak in which you will find many sharp teeth. In the adult, the upper jaw is full length but in the juveniles, they only have a half-beak appearance. The juveniles have a smaller upper jaw with an elongated lower jaw. As a juvenile, they eat only plankton. When their beak fully develops, they will switch to eating fish.

They feed primarily on smaller fish. Some species will eat swimming crustaceans, small cephalopods, which is a type of mollusks like octopus or squid, or krill. The needlefish is blue to dark green along the back and silver on the side. They can live up to eight years and when hunting, it depends primarily on its sense of vision...

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