Hello everyone and Merry Christmas! I'm a new goldfish keeper and I got my goldfish about 2 months ago, a small oranda. The past 3 weeks I've noticed that he has been staying at the bottom of the tank, at the very same spot for quite a long time every day. I've read that this may be a reaction to stress, but there are no stress factors, I mean nothing has changed, the water parameters, the temperature, the food are all the same. The spot he's staying at is not a hiding spot, there's no decoration, just gravel. Also, there are no signs of disease. His appetite remains the same, he loves food, when he swims he does so in a playful way and there are no physical signs that would indicate he's sick. Has anyone ever faced something like that? Any idea of what this behaviour actually is?