A bubble over the eye and discoloration can be symptoms of several serious conditions. It's crucial to seek help from a qualified veterinarian who specializes in fish.
Here's why it's important to see a vet:
* Accurate Diagnosis: Only a vet can properly examine your fish and determine the underlying cause of the symptoms.
* Effective Treatment: Different conditions require different treatments, and a vet can provide the most appropriate and effective care.
* Prevention of Spread: Some fish diseases can be contagious, and early diagnosis and treatment can help prevent them from spreading to other fish in your tank.
Here are some general things to keep in mind:
* Observation: Closely observe your Betta's behavior, appetite, and any other changes.
* Water Quality: Ensure your tank water parameters (temperature, ammonia, nitrite, nitrates, pH) are within the safe range for Bettas.
* Tank Maintenance: Clean your tank regularly and perform water changes as needed.
* Diet: Feed your Betta a high-quality diet appropriate for its age and activity level.
Remember, early intervention can significantly improve your Betta's chances of recovery. Don't hesitate to contact a fish veterinarian as soon as possible.