How it is posible to keep image with caption in one page for #iBooks ePub in all screen sizes? I work with @InDesign CC
In order to keep image with caption in one page, you can group them but you will have to rasterize the group as items in group do not maintain their relative position in EPUB in InDesign CC. Group can be rasterized by selecting it and choosing Custom Rasterization option from Object Export Options dialog. This very problem is resolved in InDesign CC update 9.2. There is no need to rasterize group here and the text will also remain live.
Please let me know if there are further queries. I would be glad to assist you.