@rl_dane since I use it along with vim to preview my latex papers, I didn't even know that they can read epubs :o
Only if it's compiled against the mupdf library. The poppler pdf version that ships with #debian-based distros sadly can't. :'(
#FreeBSD and #Arch-based distros have the mupdf version available. I don't recall if #Fedora does.
But you can always just install mupdf, and it's almost as good as Zathura as a reader program.