The red wolftooth goby, scientific name: Odontamblyopus rubicundus (Hamilton, 1822), is a fish of the eel goby family and the wolftooth goby genus. The outer rows of teeth in both jaws are sharp and curved, sparsely arranged, and exposed when the mouth is closed; the inner rows of teeth are tiny, 1-2 rows. The eyes are extremely small, buried under the skin, and the body is naked and scale-free. Dorsal and caudal fins are connected to the anal fin. Mainly lives in shallow marine areas with muddy sand or mud substrate and water depth of 2-20 meters, as well as burrows in the mud layer of holes with a depth of 20-30 meters. Widely distributed in all water systems from the Yangtze River to the Pearl River, but only in the middle and lower reaches of the Yangtze River constitute a fishery.