What Can kill a betta fish other than fish?

- Water quality: Bettas are very sensitive to water quality and can easily be killed by high levels of ammonia, nitrite, or nitrate.

- Temperature: Bettas are tropical fish and need water temperatures between 75-85 degrees Fahrenheit. If the water is too cold or too hot, it can stress the fish and make it more susceptible to disease.

- pH level: Bettas prefer water with a pH between 6.5 and 7.5. If the pH is too high or too low, it can damage the fish's gills and make it difficult for them to breathe.

- Decorations: Bettas can be injured by sharp decorations or plants with rough edges. It is important to choose decorations that are smooth and safe for fish.

- Other fish: Bettas are territorial fish and can be aggressive towards other fish. If you are keeping bettas with other fish, it is important to choose compatible species and make sure there is enough space in the tank for everyone.

- Disease: Bettas can be susceptible to a variety of diseases, including bacterial infections, fungal infections, and parasites. It is important to monitor your betta for signs of disease and treat it promptly if it becomes sick.