Goldfish Food
Repashy Soilent Green and Repashy Super Gold are some of my favorite foods for goldfish. They aren’t fed off of the surface so it reduces the chances of buoyancy issues. They are also made from very high quality ingredients. Plus, it is easy to make and feed, and even better, the fish love it! Give it a try!
Purple Bag Hikari goldfish pellets is another great food for your fish! I would recommend that you try this one as well! If you do try this food carefully observe your fish, especially orandas, as a lot of people claim that this food causes buoyancy issues.
Another option that is often more fun, is to make your own homemade food! There are many goldfish specific recipes online, or you could come up with your own recipe! This often also much cheaper which is a huge plus!
I would also recommend feeding fresh veggies such as peas and spinach. They are a great supplement to your Fish's diet. Frozen bloodworms, brine shrimp, or mysis shrimp are also welcome treats. I wouldn’t use them as a staple though.