I've kept and spawned imbellis and wild type splendens. My last splendens just passed a few months ago. I will get back to them eventually but I'm having a lot of fun with cichlids right now. Just got a spawn of GBR. They have always been a very difficult fish for me so it's particularly rewarding. A lot to be said for keeping the wild type bettas going too. Best of luck with your rubras!