buy a 20 dollar red planet frag and call it a day. lol. they look so similar but you wont be able to say it's "yada yada yada" from wherever
Can't say much for the Tierra del Fuego, but I have seen the Raspberry Limeade full colony sitting right next to a large colony of Red Planet and they don't look any thing alike when grown out. But some similarity in color as a frag is definitely there for sure.