Red wolf tooth goby (scientific name: Odontamblyopus rubicundus) for the eel goby eel goby family wolf tooth goby genus of fish, commonly known as the red bright fish, hemp head, red Nai, skinny stripes, red nine, red nose stripes, Nai fish. It is distributed in the northern coast of the Indian Ocean, east to Indonesia, north to Korea, Japan and the coast, belonging to the inshore warm temperate fish. It mainly lives in shallow waters with muddy sand or mud substrate and water depth of 2-20 meters, and burrows in the mud layer of holes with a depth of 20-30 meters. The type locality of the species is in the Ganges River.

It is said that after people in the area of origin dug it out of the mudflats, it was originally used as chicken feed, but now gradually began to become a food, and some even dried and processed into dried fish.