You need to place10 Forest Objects and 14 Peak Objects in the Meadow Zone and wait 70 days.
sorry, you can't get riolu in Pokemon emerald version.
go to iron island and find riley. go battle the team galaactic guys and after he will give you a riolu egg then just hatch it to get riolu
In the grass area
riolu
in the wild
in safari zone
Catch a Riolu and evolve Riolu.
You can possibly get riolu in Pokemon black
If your riolu is following you in heartgold or soulsilver you can talk to it.
Safari Zone after unlocking the usage of the blocks.
very very rare
You need to place10 Forest Objects and 14 Peak Objects in the Meadow Zone and wait 70 days.
no but you get the riolu egg in iron island
If you have a lucario instead of trying to capture riolu why not breed lucario instead.
sorry, you can't get riolu in Pokemon emerald version.
A Riolu egg can be obtained from Reiley within the Iron Island