The Exclusive differences between Blue and Red are there Pokemon
--Red--
Feebas
Mantine
Plusle
Porygon
Roselia
--Blue--
Aipom
Lapras
Magikarp
Minun
Porygon2
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Pokemon Red Rescue Team is a GBA game pak, while Pokemon Blue Rescue Team is a DS game card. You can only play Red Rescue Team with a Gameboy Advanced (GBA) or Gameboy Advanced Special (GBA SP), but you can play both games with a DS.
Source