A SECRET WEAPON FOR GIANT KOI FISH

I bought what I believed was a Koi betta - typically white with a small amount of purple and black. He has totally improved shades, and now he is mostly blue and black!Goldfish do far better at within the eighteen-20C mark while tetra and betta would not be very pleased so the goldfish needs to go ASAP, then inside the tank you can have 1 betta and