Annotated Seurat objects (RDS) of single-cell data from RFC1-KO zebrafish brains at 2 days and 4 days post-fertilization. These data are published in complement to the publication "RFC1 regulates the expansion of neural progenitors in the developing zebrafish cerebellum" (Nobileau et al.), and the raw data available in PRJNA1126282. Non-exhaustive R processing code (in Markdown) used to generate data is also made available. This enables the regeneration of most of the presented figure, as well as additional analysis. More information on the generation of these data is available in the associated publication.