Hi Sea Monster87
Depending on the amount of filtration you have, and the size of your fish, you may be crowding your tank a bit if you add any more fish.

You will have to be the judge of that.
The problem is that corydoras, including pandas, are a schooling fish and do not thrive if they are alone with other fish. You will need to get at least 2 or 3 of them for them to be happy. On the good side, however, they are small fish and do not take up as much valuable tank space as many of the other cory cats do. Also, they are friendly fish and will get along very well with all the other fish you have.
If you want them and feel that you need to make room, I have a suggestion that might help. I have 2 Dwarf African Frogs, too, and they live quite happily and safely in a one gallon mayonnaise jar that I got from a deli. They are such delicate little creatures that I'm afraid the fish in my tanks could hurt them, so I keep them apart. You might want to consider moving them to make room, if necessary.
If you get the pandas, I'm sure you will just love them.

Everyone does!