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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

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9y ago
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15y ago

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)

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14y ago

Drastic water temperature change, did not add dechlorinator, to large a water change which resulted in too much bacteria loss, etc... Most coloration loss is due to stress which can result from any of the aforementioned conditions.

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15y ago

It may be just so tired from the stress and adjusting to the new conditions.

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Q: What causes a betta to change color?
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