Lapilus and asteriscus can both be used for ageing and the percent agreements within the error of ? 1 annuli for annulus readings between it and lapillus were 100 % , but sagitta is not suitable for ageing because it is fragile 微耳石和星耳石可用于鉴定年龄，误差在1轮以内的吻合率为100 ；而矢耳石易碎。不适合鉴定年龄。
2.
The interpretability of four kinds of ageing materials are as follows : sectioned dorsal fin spine > sectioned lapillus > scale > vertebra . sectioned dorsal fin spine is the best material in ageing of the fish less than eight years . as for the fish elder than eight years sectioned lapillus is the reliable ageing material that had more annulus readings than scale , dorsal fine spine and vertebra 对8龄以下个体，用背鳍条磨片鉴定年龄效果最佳；对8龄以上个体，臀鳞、背鳍条磨片和脊椎骨上的年轮计数明显低于微耳石磨片，微耳石磨片上的年轮计数最高，是高龄青海湖裸鲤可靠的年龄鉴定材料。
