1. Test the water quality in her tank. Make sure the water is clean and within the ideal parameters for guppies. Check the temperature, pH, ammonia, nitrite, and nitrate levels.
2. Check for signs of illness. Examine the guppy's body for any abnormalities, such as spots, lesions, or fungal growth. Look out for any unusual behavior, such as lethargy or loss of appetite.
3. Quarantine the guppy. Move her to a separate hospital tank to prevent the spread of any potential infection to other fish. Add aquarium salt to the hospital tank (according to the package instructions) to help reduce stress and support the guppy's immune system.
4. Provide hiding spots. Make sure the guppy has plenty of hiding spots in the hospital tank to reduce stress. This can help her feel secure and less vulnerable.
5. Monitor the guppy closely. Keep a close eye on the guppy's behavior and condition. If her condition worsens, consult a veterinarian or experienced aquarist for further assistance.
It is important to note that vertical swimming can also be a normal behavior for guppies in certain situations, such as when they are sleeping or resting. However, if the guppy is exhibiting other symptoms of distress or illness, it is best to take action to ensure her well-being.