Fig. 3

Otolith section of G. huanghensis (from Ningxia section, female, with a total length of 17.21Â cm, body weight of 44.10Â g, and 4 years old) in the upper reaches of the Yellow River. Note: the red arrows indicate that the otolith ring pattern consists of three light and dark rings, so the age of the sample is 3+ years old (4 years old)