why do gold fish change color and is it bad if they do?

Answer 1

They can change color for a few reasons.

Sometimes its because of the age of the fish - young fish are mostly drab in color and get the brighter colors as they develop. Even older fish can change if the number of cells that produce the dark pigments changes. These aren't anything to worry about. The color changes here are determined by the genetics of the fish.

Some fish change in response to light intensity. A goldfish kept in a house may change color when it's put in an outdoor pond for the summer, then change again a few weeks after it's brought inside for the winter - sort of like humans getting a tan.

Color-enhancing foods can affect the color of a fish, and so will stopping the use of it.

Goldfish may also become paler overnight when the lights are off, and regain their color soon after the lights come on in the morning.

Any of the above are normal for a fish and shouldn't be anything for you to worry about. When you want to worry is when the fish show the following color changes.

The fish is milky white and looks slimy over any part of its body - this can be caused by an infection.

The fish is pale/dull and doesn't change when the lights are on.

The fish develops small white spots that look like grains of salt any where besides the covering over the gills and front edge of the side fins (it the spots are in these areas, your fish is a boy - if it's anywhere else, it's probably got ich, a parasite).

The fish gets black patches on it's fins or body - this is a sign that there's been too much ammonia in the tank, but the black is a sign of healing. But it could mean that you should do 25% water changes more often.

Answer 2

It is normal for goldfish to change color throughout their lives, but especially the first two years. Also, some people note black marks on the edges of their goldfish's fins. If the area was injured, then this indicates that the fins are trying to heal and is a good sign. Also, some of the normal color changes may occur along the edges of the fins. Only if there appears to be black spots that are small in various areas, is black spot (a parasite) a concern. If the area does not appear to have a bacterial or fungal infection, there is probably no cause for worry.

Answer 3

There are a few reasons a gold fish will change color.

type of goldfish. Some special breeds will actually change color due to the water conditions they are in.

they will change colors as they age

They will change color due to low levels of lighting or high levels of lighting

Poor food and lack of vit's will also change the color of goldfish.

Sickness can strip a gold fish of color.

Breeding will change certain types


Goldfish are prone to changing colors, however if you are asking black is not one of them. Black splotches on fins or the body can indicate an infection, a salt or ammonia burn or the begining of fin rot.

Not all color change is bad.

Answer 4

Black moors case in point substitute shade if the water is in simple terms too heat, yet additionally they alter shade over the years. Black isn't an extremely sturdy shade for fish. Many different will substitute shade as a results of rigidity, low water high quality or some breeds of course substitute as they age. the colour of a fish can tell plenty approximately that's well being.