HikariUsa Inc AHK02342 Gold 17.6-Ounce, Medium

can i feed this to my large indoor aquarium goldfish?. thank you

I have some kohaku koi at my pond, i wonder if this food can bring out the red and white color for them.

Hi, I have been feeding my fish the same fish food for 20 years. Would changing the brand all of the sudden effect them?

Does it sink or float?