I was wondering what the survival rate of a small shoal of rbp's would be if they were mixed with a similar size shoal of caribeP? Would they just be killed of right away or would they tend to get along fine? Also, if I have a rhom that's only a couple inches (2") then will it be possible to put him in a large aquarium with some larger rbps? I know they are supposedly aren't supposed to be mixed, but how could the 2" rhom kill off a 6" rbp? also, the rbp's will outnumber him 6:1.