I feed mine Tetra Koi Vibrant (somthing like that) food but, wonder if anyone has found the perfect fish food that can really kick their growth into high gear? I sort of became partial to the Tetra cause I see it pretty easily being orange and the fish seem to really like it. I've tried some others and fish won't even come up or not eat it aggressively like they do with the Tetra. On other sites I read how people are feeding some special food blends and getting some serious growth numbers. I know some is genetics but some has to be what they're eating too.