Why are my fish hiding all of a sudden?
To protect themselves, fish will instinctively hide when they are uncertain, frightened, stressed or uncomfortable. Having a safe place to retreat provides comfort and security, and greatly improves a fish’s chance of surviving in the wild.
Why is my betta hiding by the filter?
If your betta fish is kept in a tank that has large open spaces and no hiding spots from bushy live plants, then they will seek shelter behind the filter or any decoration in the tank. They do not like to swim in open spaces as this is an instinctive behavior that they have developed from the wild.
How do I know if my betta fish is dying?
Other signs that offer a clue to knowing when a betta fish is about to die include discoloration along the fish’s body, such as white or brown spots. Strange swimming movements or a shortening / eating away of the fins can also point to severe illnesses.