There are 25 kinds of mudskippers in the world. Common species are mudskipper, giant mudskipper and blue mudskipper. Mudskippers can crawl and jump on the beach with their pectoral fins and tail handles. Skin and tail can be used as auxiliary respiratory organs, can live out of water for a long time, and have stronger tolerance to harsh environment than ordinary fish. The mudskipper has gills and is a small ancient fish with a low degree of evolution.
Bullet-coated fish is a small edible fish with a body length of 50 to 90 mm, which has a large output and certain economic value. Although this kind of fish is very small, its meat is delicious and nutritious.