How oh how do you manage to get the top picture??? My betta is quite similar in slightly lighter colors... and when I look at him color wise he is the same... then I take a picture and booom blueish shimmer is gone and he just looks pink! LOL
So I covered the hole and the replacement Betta seems happy enough, I need to get a thermometer and possibly a heater (I don't know if they make them for such small tanks..
Anyways to get the picture of the teal shimmer I turned on the flash Which is technically a no-no for fish because it can spook/possibly hurt their vision. Both the top and bottom picture were taken with a flash, the middle was not.