While we are in Lumiose City in Kalos in Pokemon Legends: Z-A, it is possible to get Pokemon from Galar like Galarian Stunfisk. This happens via Side Missions that pop up as you advance the campaign. Once you’ve passed the halfway point and gained access to Wild Zone 11, that’s when you’ll get the opportunity to take on “Find My Galarian Stunfisk.”
Where do I find the missing Galarian Stunfisk in Pokemon Legends: Z-A?
To kick off Side Mission 72, you need to wait for the icon for it to appear on the map near Jaune Sector 10 and 12. It’s just north of Restaurant Le Nah on North Boulevard. Terri will be standing there with one Galarian Stunfisk, but originally there were two! The missing one apparently headed into Wild Zone 11, and Terri is concerned someone could get hurt by it since it disguises itself as a Poke Ball hidden in dirt.
Here’s where Terri is on the map.

As for finding the Galarian Stunfisk, part of our job is done for us. We know it is in Wild Zone 11. The issue is that standard Stunfisks are also all around! The Galarian version also blends in better due to its coloring. So we’re really looking for a Poke Ball lying on the ground.
What you want to do is enter Wild Zone 11 via the southwest entrance near Vert Sector 3. After you go down both sets of stairs, head left. The Galarian Stunfisk’s Poke Ball lure should be right by the water’s edge. Interact with it, and Terri will show up for a cutscene.
Here’s the exact spot on the map:


In addition to getting the Galarian Stunfisk when completing this Pokemon Legends: Z-A Side Mission, you also get a Max Revive, a Power Weight, and 800 in currency.
Pokemon Legends: Z-A is available for the Switch and Switch 2.