I found this second "family" in my 45. I already have another family on the other end that's about 1 month older. This male is a little beaten up because he WAS the dominant male, but lost out. He found a second female in the tank and now has his own family. My angels are "assisting" in keeping watch LOL.
http://youtu.be/ySd5iI5mPRo
http://youtu.be/ySd5iI5mPRo