Help FFX monster arena

[_Blade_]

Okay, I'm now doing the sidequests, obviously the monster arena one, and I really want to get Cactuar king..but I need to catch 1 of every fiend on Thunder plains, I got all of them excep the qactuar..
Does anyone knows how to get it? or where to find it?

I hope somebody helps me, cuz I wanna train like hell xD

 

[Bambi]

Did you touch those stones in the thunder plains, there's like 3 that you have to press the square button one to activate. Well, you only need to activate one to get the cactuars to show up...theres one near the beginning, a little ways up from the save sphere one in that little niche on the map and I cant remember where the other one is...there MIGHT be 4 of them, but you can only activate 3 of them anyway

 

[blakstang98]

In my experience, Quactar's tend to show up more in the north. It makes sense that you'd have to activate the cactuar stones too, seeing as they "free the souls" of the Quactar's or whatever. The good thing about this is they are typically in packs of 3 when you encounter them, so if you're capturing with the intent of capturing 10 of everything, it'll only take 4 encounters. But for now, activate the cactuar stones and stay to the north-side of the Thunder Plains to find them.