Embers lost all color overnight?

[Sunrise]

Is this because of the betta I added, or because of a dieses? It happened overnight, it is now a purplely white.

EDIT: so I wrote the original a while ago and forgot about it, it’s now a pale yellow. Originally, it was yello so I think it’s getting color back

 

[AamirAlfaiz]

It's most likely a sign of disease. A sudden loss of color in an aquarium fish can indicate stress or illness. I suggest you isolate the tetra and monitor its behavior.

 

[Sewerrat]

Would check water parameters. Was betta quarantined prior to adding

 

[BigManAquatics]

Is possible the betta is stressing the other fish out for sure. They can be real punks to tank mates when you aren't looking.

 

[Sunrise]

Would check water parameters. Was betta quarantined prior to adding

Yes, he was in his own tank for a while.

Yesterday: the color came back! I can now not differentiate the tetra from the other bright colored tetras. Additionally, they seem to be fine swimming with the betta now.



This morning: the color lost overnight, AGAIN. after 10 minutes it came back. If it happeneds again I’ll separate it.

 

[MrMuggles]

Is possible the betta is stressing the other fish out for sure. They can be real punks to tank mates when you aren't looking.

Bingo, and some fish like to terrorize while the lights are out

 

[DaniosForever]

The betta should be moved and if you really want a betta with your ember tetras go to your nearest LFS and pick a betta in a tank with other fish then that betta is probably chill.

 

[Perfect]

Fish usually pale when the lights go out. It is a defense mechanism. My emperor tetras are pale every morning but brighten up as the lights brighten.

 

[DaniosForever]

That could be it. I knew I should not have framed that innocent betta.