Yellow stickleback fish is small in size, characterized by a row of spines on the back in front of the dorsal fin. Each ventral fin has a sharp thorn; The tail handle is slender and the tail fin is square. There are no scales, and there are countless hard nail pieces on the side. Stickleback fish is famous for its reproductive behavior. Pseudosciaena crocea mainly uses aquatic insects, mollusks, shrimps and small fish, and likes to live at the bottom of ditches and grow slowly.