FEMALE KOI BETTA FISH FUNDAMENTALS EXPLAINED

I’ve in no way owned a koi betta in advance of and I used to be wondering if it’s normal for them to change colors fast? I’ve experienced my Galileo for almost two months and in that point he’s gotten darker and is also now switching to generally be lighter.Dec thirty, 2016 #seven I had a female for months, yellow koi, she failed to modify