I say no to almost any cichlid in a 10g tank.
There is a real difference between what can manage and what is best. While a Bolivian Ram
in a 10g tank will survive, it is certainly not the best environment for its health. A 20g is absolute minimum for this fish, and I would not even go less than a 3-foot tank.
I don't know what rasbora you now have, but all species of rasbora are shoaling fish, meaning they live in large groups and thus must be maintained in groups. Six is usually the minimum suggested, but more would again be better for the fish. But a 10g is very limited space. If you have the more common Harlequin Rasbora
, I would get another 4 to have 7 in total. While not the best here either, it will work better than some, since the rasbora are quiet fish not requiring swimming space. Having live plants will help too. The only other fish suitable now would be some substrate fish, maybe a trio of corys.
You will note that the above fish names shaded, meaning you can click on the name to link to that fish's profile. Profiles are under the second tab from the left in the blue bar across the top of the page, and information on numbers, minimum tank sizes, compatibility, water parameters, etc is included.