I HAVE A GOLDFISH CHANGING COLOUR ? WHY AND HOW

Question

i have a goldfish which is a more goldin colour rather than an orangy gold but over the last 2 days it has started to change a dark blue/black has anyone got an idea why thanks

Answer 1

It may have some sort of slime disease in which case you would need to buy some treatment.

Goldfish can sometimes change colour but, they usually lighten so you need to make sure it isn't a disease.

Answer 2

Fish change color as they mature, with added stress, and commonly exhibit more vibrant colors when darker gravel or background is present.