Also agree with Inka
Color-enhancing foods can accentuate colors that are present, but otherwise subdued, but only to a limited degree. Sometimes dull orange goldfish can be "reddened up" with algae supplements or parboiled vegetables, such as peas. However, a side effect of color enhancing foods is color shifting on multicolored goldfish. White areas on ranchus or sarassas can turn orange & the Black on Moors has been know to disappear altogether into Red.
The most effective way to enhance existing colors in goldfish — whether it is red in ranchus or black in moors — is to place them in a sunny outdoor pond. The combination of stable water quality, several hours of sunlight, and natural foods — algae, worms, insects, etc. — will bring out colors in your fish like nothing you can imagine.
Color-enhancing foods can accentuate colors that are present, but otherwise subdued, but only to a limited degree. Sometimes dull orange goldfish can be "reddened up" with algae supplements or parboiled vegetables, such as peas. However, a side effect of color enhancing foods is color shifting on multicolored goldfish. White areas on ranchus or sarassas can turn orange & the Black on Moors has been know to disappear altogether into Red.
The most effective way to enhance existing colors in goldfish — whether it is red in ranchus or black in moors — is to place them in a sunny outdoor pond. The combination of stable water quality, several hours of sunlight, and natural foods — algae, worms, insects, etc. — will bring out colors in your fish like nothing you can imagine.