All RTS have very different personalities.
I kept mine with 2 pairs of GBRs, killies, and panda corys. I doubt the RTS even knows the corys are there, and he rarely gets territorial, maybe during feeding, but still very minimal and only towards the female betta, which i think is because she somewhat resembles a RTS with her red tail.
I think that a 10 gallon is okay for a pair of GBRs now, but when they max out it would be best to get them a larger tank.
And im not sure that a 10 gallon would work for a RTS and a piar of GBRs, so i'd pick one or the other. And then maybe get a small school of tetras.
I kept mine with 2 pairs of GBRs, killies, and panda corys. I doubt the RTS even knows the corys are there, and he rarely gets territorial, maybe during feeding, but still very minimal and only towards the female betta, which i think is because she somewhat resembles a RTS with her red tail.
I think that a 10 gallon is okay for a pair of GBRs now, but when they max out it would be best to get them a larger tank.
And im not sure that a 10 gallon would work for a RTS and a piar of GBRs, so i'd pick one or the other. And then maybe get a small school of tetras.