Your betta fish lies at the bottom of tank and only comes up for food a short time What is wrong with him?

Possible causes:

1. Water Quality: Ensure that the water parameters, including temperature, pH, ammonia, nitrite, and nitrate levels, are within the recommended range for bettas. Poor water quality can cause stress, lethargy, and loss of appetite.

2. Insufficient Oxygen: Check if the tank has adequate oxygenation or water circulation. Bettas require a well-oxygenated environment and can suffer if the water is stagnant. Consider adding a filter or an airstone to increase water movement and oxygen levels.

3. Stress: Stress can also cause your betta to lie at the bottom of the tank. Common stressors include overcrowding, the presence of aggressive tank mates, or changes in the environment. Make sure the tank is not overcrowded, and remove any potential sources of stress.

4. Disease or Infection: Various illnesses, including bacterial infections, fungal infections, or parasitic infestations, can cause lethargy and loss of appetite. Observe your betta for any visible signs of illness or injury, such as changes in appearance, behavior, or the development of spots or lesions.

5. Old Age: If your betta is elderly, its metabolism and activity levels may naturally decline, leading to decreased movement and a preference for resting at the bottom.

If you have ruled out water quality, stress, and potential diseases, and your betta is still lying at the bottom of the tank, it is best to consult with an experienced veterinarian or an aquatic specialist for proper diagnosis and treatment.