Genetics, they are usually WAY overbred, and the breeders don't care about passing along deformities, which is a shame...I attached a pic. He’s had a slight bend in the tail region for about a year but now it’s very pronounced. What can it be from?
its fine, as long as he's happyit is just bent spine disease, he looks healthy so it is normal i think, just that he grows up with it sadly...
thanks. He is very active. Eats. Swims with my other fish. And it’s always been there slightly. But I feel it suddenly got much worse. As long as it’s nothing that can affect my other fish and he’s seems happy then I’ll just leave him be.