no
green and light brown
Different types of goldfish food typically don't affect the colour of goldfish, however there are some specific goldfish foods that may enhance the color of goldfish- but do not change its overall color.
Yes, being brown in color does not mean a fish is unhealthy. Goldfish that are brown in color are referred to as "chocolate". These chocolate fish are relatively rare; you are lucky to have one.
goldfish are not always one color because they have different species. Also, goldfish can change colors over time. They won't always be gold or maybe they won't always be white or whatever color your goldfish is.
Birds of prey do not change plumage color in winter.
Goldfish can lose their orange color due to light deficiency or dietary deficiencies. In these cases, the color change is often reversible.
Goldfish are available in more colors than just gold. In fact, there are goldfish that are colored yellow, red, bronze, blue and even black! What's more, some goldfish have a mixture of colors in their scales, with varying shades, hues, or colored shapes.
Redtails are light grey on the belly, and darker gray up the sides, and dark grey on top. Their tail feathers are noticeably red-brown.
If it's young you it may be a poor strain, if not, it is not uncommon for fish to undergo a color change as the get older and grow. Take the Black Moore Goldfish for example, they will eventually turn more toward a golden color with age.
Goldfish don't always stay the same color. As a goldfish ages, it can turn a variety of colors, like orange or yellow or white, including patches or spots of color as well.Common household goldfish tend to change colors throughout their lives. White, orange, and yellow color changes, in whole or in part, are very common.
Goldfish see in color.
I think so but I most likely see them gold.