So going to start a 18 x 18 x18. I have decided on a pair of Rams of some sort. I am torn between my personal fav cardinal tetras that I have kept before and some sort of microrasbora or pearl danio. My LFS looks to have a few different types of these fish. My only thing is I have always been a purest when it comes to origin. I know micorasbora and pearl danios are from Asia. I am hesitant to mix Continents. What are your thoughts? What schooling fish would you suggest. I am thinking 3 otos, 2 GBR, and <fill in the blank>.