"octaviapus" should imply "octopony"

““octaviapus[](/tags/octaviapus) -> ““octopony[](/tags/octopony)
 
Additionally, “octopony” should probably imply ““octopus[](/tags/octopus) as well, since it’s currently being done for “octaviapus”.

@Marker  
It should also imply octavia.

Oh yeah, that too.

Done~