you can only get Magikarp in RRT and Feebas in BRT.How can you have both in one game ?
There is but one way to obtain version exclusive Pokemons in RRT and BRT, and these are Wonder Mail codes. Here are the codes to get Feebas in BRT and Magikarp in RRT:
Feebas 1?69 ♀JY? ?X6Q XJ?Q F4?6 Q!?X
Magikarp X??S ??X? 468? ♀+?? 9756 SY??