This paper reports some fish microremains from the Third Member of the Shaiwa Group in the Sidazhai area, Ziyun County, Guizhou Province, such as Lamnilance ovalis gen. et sp. nov.，Fragilicorona asymmetriia sp. nov.，Fragilicorona guizhouensis sp. nov. and two indeterminate genera and species. Those fish microremains are associated with conodonts Sweetognathus inornatus, Sweetognathus paraguizhouensis, Hindeodus minutus, Hindeodus cf. ellisoni, Euprioniodina sp., Hibbardelloides sp., Hindeodella sp.A, Hindeodella sp.B, Neoprioniodus sp. and Ozarkodina sp. According to the analysis of the conodont assemblage, the fishmicroremainsbearing beds, namely the Third Member of the Shaiwa Group, are of Middle Permian in age.