Why are my fish swimming at the top of the tank water?

Uncomfortable fish swimming at the top of the tank can be a fishkeeping nightmare but it's easily fixed. Find out how to resolve this here!

Fish Staying At Top Of Tank: Reasons And Quick Fixes - Badman's Tropical Fish

My fish has been floating at the top for about an hour now. He keeps flipping back to his belly and swimming a little but then flipping again and rest for a

Female Molly Staying At Top Of Tank Freshwater Fish Disease and Health Forum

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Why Do My Fish Keep Dying? 11 Reasons & How to Prevent It

Why are my fish swimming or gasping at the water surface?

goldfish, keeps doing this at the top of the tank… making bubbles and inhaling them. anyone know what i can do? and what it is?? : r/Goldfish

Why are my fish sitting at the bottom of the tank? They are alive, but why? - Quora

10 Best Top-Dwelling Fish for Your Freshwater Community Aquarium – Aquarium Co-Op