As a fish owner, quite frequently, I noticed changes in my Koi's coloration. For example, a few times, I saw that my Koi fish are turning pink. As I studied the phenomenon, I found a few ways to...

As a fish owner, dozens of times, I've noticed changes in my fish's coloration. For example, there were periods when I saw that my mollies gradually turned black. As I studied the phenomenon, I...

Quite frequently, I notice bizarre phenomena in my tank. For example, there were days when I saw my goldfish eating their own poop. As the years passed by, I learned what it could indicate and which...

Over the years of fishkeeping, I've noticed quite a few odd phenomena. For example, there were days when I saw my goldfish lying at the bottom with a curved spine. As the years passed, I learned how...

As a fish owner, I've been growing goldfish for years. Over time, I learned how to identify signals that indicate that something had gone wrong. One example would be a goldfish that is continuously...

Goldfish are probably among my favorite types of fish. That is why I tend to get worried once I see unusual behavior in their tank. For example, one time, I saw my goldfish lying on its side at the...