Beautiful! You got them a big aquarium. I think for that space you need to add more kind of fishes and add colorful coral reefs and aquatic mosses. Feels like their living in a real underwater world.
I'm trying to raise Killi fish but my good friend told me that they have only short survival rate. I bought 30 pieces 1 month old killies, now I planning to sell them since i can no longer raised them longer as i wanted.