Again I want 2 thankyou for your replies. I'm so happy to find an active forum. References to killifish in community aquaria seems to be sorely deficient. Live foods are not a problem--as my fish get their share of live foods. Rachiovi is a beautiful fish, but I had my eye on nothos more in line with Korthoasae or larger other peaceful nothos. There is such a ridiculous abundance of sub-species, it would seem there is quite a lot of compatability possibilities, especially in an overly-decorated 570 liter aquarium much deeper than 1 meter. It seems that most of the killifish available are tank raised, leading to profound changes in the fish themselves. I'm not interested in Nothosbranchius exclusively either. All branches of killifish are unknown to me. There are thousands of beautiful pictures, but very little information, other than for breeding. Actual community experience would be worshipped. I'm also interested in learning the latest hybrids available.
As a side note, I've actively searching for anyone who is culturing a breeding program for jumbo guppies or cardinals. Also anyone else who has tank bred the caecilian worm.