Keeping a full sized corey with two pygmy coreys?

Hey guys. My father in law recently accidentally got a single full sized corey catfish for his spec V. As soon as I found out, we talked about how that isn't exactly the ideal environment for even a pygmey corey, and I offered to take it in my 45g. However, I've already got two pygmy leopard coreys: will they get along? Or will the larger one be aggressive? Also, they have different coloration than the large one, I'm not sure if that will matter for them bonding or not.

Thanks.