For what its worth when I bought and stocked my pond with feed trained HBG, LMB, and CC the person who ran the fishery told me to only feed 6 days a week. The reason being he was having some fish die in his ponds and they suspected it was from the fish food constipating the fish. He stated the fish needed a day off to expel things. There is nothing scientific about it but observation from a gentleman who has been running a hatchery for 30 plus years. He has not had problems since. I have not seen or read anything like it but try to give the fish one day off a week and have had no problems in 2 years.