for my case, my super white male currently refuse to eat anything. I tried tubifex, flakes , Freeze dried Brine shrimps.I even separate the male alone in a small fish tank. Add in Duck weeds ,aeration and use black plastic backs to wrap the surrounding only leaving the front uncovered.Still it juz ignore the food. For the past 4 days it hasnt eaten anything. I wonder what had tony feed him.I hope it is not feeding on algaes all the while.. For the rest is fine still surviving, but still on quarantine because i suspect tony feed his guppies with tubifex , so i had to qurantine it for a while before mixing it with my guppies. For the females, i place it in the new tank i juz setup. Currently will try to qurantine every guppy i had and feed them tubifex worms to boost their immune. So in future they had resistance to eating "drain Food" without problem.