It sounds to me like your not going to have any babies to worry about, so the landlord will be happy. Not that I can understand why it would matter to him. It's sill just one tank, Right? Well from their ages, yep Oscar wants babies, I would guess. Sense Jack older too....I'm sure he wants to help her out.

Even though they are both from the Chchlid family.....conditions in the tank would have to be just right and it would help if they where both of the same breed fish, size etc.

If by some chance they do....first I want a pic. Then if you have a local pet store, not a chain store, a lot of time they will give you a discount for the trade of your fish. Sometimes I even traded so many Chchid for a other fish. Thats how I got 2 of my parrot fish. They still work out ahead on the deal though.