I have no idea nor have I heard of anyone feeding dogfood or catfood, but my dogs eat SolidGold Hunden FlockenBushFishRox;1803596; said:there was a story on there like a year ago of someone that was feeding dog food to their oscar, and it died of unknown reason at 8"s...
so I would say it isnt healthy for your fish... also the dog and cat foods will have oils and fats that fish are used to...