06-27-2008, 08:35 AM
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I've noticed that lots of the time my fish dont like adjusting to a new food, unless its live or frozen. I try to feed them a variety, I have about 15 different foods that I will feed my fish. The variety seems to make them more open to trying new foods. I doubt the goldfish flakes would hurt your fish, and I dont know for sure what is in them, but I do know goldfish will eat plants, so I would guess that there is a lot of plant matter in them. This would probably be good for the cory, and not bad for the guppies, but I would definitely keep trying with the tropical flakes, if they get hungry enough they will eat them. You could go with all tropical flakes or a mix of the two. Its just like with us, you could probably live for years just eating oatmeal, but you wouldnt be healthy, the more variety the better is my opinion.
Prepared foods usually have some variety built in, so it isnt really as bad as that example, but you get my drift.