do you have 2 in one tank?
if you do thats a bad number. when they start fighting for territory you will either be down to one or have 2 dead. you might want to think of getting atleast 1 more
You should be fine with 3, if you can try to pick up one more 4 i think is a better number to shoal with, but 3 is ok also. What size tank are they in by the way?
your golden with the three in the 75g for a while. Probably could even get away with life with the three. If you upgrade tanks then get some more if you can. I think rb look the best in shoals and most impresive in shoals.