I left my house for 3 days on a thanksgiving vacation and i have come back to notice my comet goldfish's tail has a few black streaks on it. His behavior seems normal but i was wondering if this could be harmful to my fish or a possible disease. Please aid me in figuring out if this is just natural to his looks or a problem i need to fix.
If it is a problem that anyone knows how to cure please tell me how to help my fish.
If it is a problem that anyone knows how to cure please tell me how to help my fish.