The crocodile-shaped round-jawed needlefish Tylosurus crocodilus crocodilus, also known as the crocodile-shaped fork-tailed crane sajuri, commonly known as the water needle and the green saw, is a species in the order of the fin-finned fish, Hyporhampyromyza, family Hyporhampyromyza? It is one of the species in the genus Hemipterus.

This fish is a larger species of the family Crane Hyporhampiidae, often swimming in groups in the surface layer. It is a predatory fish that feeds on small surface fish and often jumps out of the water in pursuit of its prey, which is extremely dangerous due to its sharp teeth.

This fish has an extended body, almost cylindrical, round or oval in cross-section; both palates protrude like a long rostrum, strong and powerful, with a banded arrangement of fine teeth and a row of sparse canines; the lower jaw is slightly longer than the upper jaw, which is flat and straight, and both jaws are firm and without gaps. Caudal fin biconcave in adults due to prominent central fin, lower lobe longer than upper lobe; lateral line running longitudinally along ventral margin, rising toward center of body at caudal peduncle and forming elevated ribs; caudal peduncle nearly square; scales tiny, gill rakers absent. Body dorsum gray-green, abdomen silvery-white, all fins dark. Body length up to 100 centimeters.

Edible fish, the head of the long parasites, generally not recommended for consumption, it is advisable to be cooked. The bones of this fish would have been green, and is not poisoned, you can rest assured.