Needlefish with sharp mouth and flat jaw, country of origin: China, Japanese, Philippine and other places. The body is extremely flat, the cross section is oval, and the body height is 65438+ 0.9-2.7 times of the body width; The head is flat and the central sulcus of the back is well developed.

brief introduction

The body is slender and flat, and the tail gradually tapers backwards. The head is long, the eyes are as big and the position is higher. The space between the eyes is flat and wide. The nostrils are large and triangular, two on each side, located in front of the eyes. The mouth is very long.

The jaw extends forward into a beak shape, the mandible is slightly longer than the maxilla, and its tip is cartilaginous. There is a thin groove on the center line of the maxilla, and a deep and wide groove in the front half of the mandible. The two jaws have the same shape and are divided into two types, one is extremely small and located on the outside; The other is big and sharp, sparsely lined up. The gill holes are very wide.