Songpan naked carp, long and slightly flat. The head is tapered. The mouth is bent downward. There is no sharp cutin in the mandible. The lip is thin, the lateral lobe of the lower lip is narrow, and the posterior labial groove is interrupted. No need. Most of the body is bare, only hip scales and a small amount of shoulder scales. The dorsal fin spine is thin and weak, with fine serrations at the lower part of the trailing edge and the starting point in front of the ventral fin.