I don't know if I have mentioned lately but these fish have been fed just one brand of food for over a decade - New Life Spectrum. I don't even feed them anything else really, like frozen food. I lost that habit out of laziness. All of the fish were babies when I got them, including the denison barbs and harlequins, apart from about 4 of the loaches which I got a bit grown up to save them from the fish shop. The denisons will be 7 years old around October this year. I don't sell the food😀 I am not promoting it but let's say it is safe to say one can feed their fish with that food only and keep them healthy without much fuss, based on my experience.