Can mix food like oranges, grapes, cook peas, and flakes be mix in a bowl and feed to goldfish?

Thank you

i would mix all the fresh food together and then all the other stuff. i dont think it would be a good idea mixing the flakes in with it. i mixed up some flakes with water once for my fry. not a good idea. it went all mouldy and kind of went into little balls. it reeked too. i imagine if the juice from the fruit did this i think it woud do the same.