if it is dieing or you died it! lol!
It usually means that they are stressed, or if it is dieing.
You want to take extreme caution with your betta to not stress it .My blue betta has changed her beautiful blue to
a blackish in her mouth area, I changed her water and she seemed to be fine and her color came back to normal. If you can, you should
buy stress treatment. It seems to work very good, and hasty. Its also called water conditioner!
hope I helped!
-cassidy
The commonest reasons for fish to change/loose colour are. If the fish has lost colours from the red part of the spectrum. The fish has probably been artificially coloured by being fed colouring food and the new owner is not feeding the same kind of food. (Use a good food). If the fish is simply loosing colour brightness then the problem is more environmental and the new owner is not keeping the water clean enough (do a water change) or the water is at the wrong temperature for Bettas. ( Use a heater/thermostat and thermometer. Betta water temperature should be 78F to 82F)
Betta fish change color by there environment and the types of food that you feed it. If your Betta fish is loosing color that means that your Betta is sick.
Yes. Betta Fish do change their coloer every now and then. Or if you have a male, he will change his coloer if hes chaseing a female Betta Fish. Or if he sees another male Betta Fish.
Pearls don't change their color.
The are a type of betta called Cambodians that feature sections without color...unless it's a recent change, don't worry about it.
Typically a betta will increase in colour, and in some cases change colours somewhat as they age. If your betta begins to lose it's colour, check for water quality problems or an illness.
A male betta has a long flowing tail while a female has a short tail
white
oxidation causes iron to change color. oxidation causes rust.
stress?
Herpes.
oxygen
The level of melanin in the eye changes.