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Why Is My Fish Keeping Its Mouth Open? (5 Common Reasons)

We all know how aquarium fish often open and close their mouths repeatedly. This is quite common, especially among goldfish and koi fish. However, sometimes, certain fish will keep their mouths open. When I first saw it myself, I got a little worried, as I didn’t know if my fish was sick or disturbed. Fortunately, …

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Fish at The Top of The Tank Blowing Bubbles: 4 Easy Solutions

Quite frequently, I notice worrying issues in my tank. For example, there were times when I saw my fish swim at the top of the tank and consistently blow bubbles. The more I investigated the issue, the more different reasons and solutions I found. Now, I am willing to share all that I’ve learned. Fish …

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Can Fish Sleep With Blue Light on? Does it Affect Their Sleep?

As an aquarist, I enjoy watching my aquarium at night. There were times when I even used blue lights since I heard it calms down the fish. However, as I learned over the years, keeping the blue lights on at night may interfere with the fish’s sleep ability. To make sure you take the right …

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