Bolivian Ram Replacement

Bolivian rams are one of those cichlids that like to choose their own mate. Adding a fish of the opposite sex doesn't mean they'll accept each other.
The recommended way is to get several young fish and let them choose, then rehome the others. This means you need a tank big enough to cope with these extra fish and you need to have agreed with the shop that they'll take the 'spare' fish back.

You could try getting just one more fish but only of you can be sure it's a female. The problem with this is that most shops sell juvenile fish and it is hard to tell the difference with young fish. The only 100% way to sex bolivian rams is by their breeding tubes. If you can find a shop with mature fish, it would be easier, but in this case make sure you don't buy half a bonded pair!