How to tell if a goldfish is sick Protruding eyes – If one or both eyes of your goldfish are abnormally large (don’t mistake this for natural characteristics in black moor or telescope goldfish), this could be early goldfish disease symptoms of pop eye or a bacterial infection.
How To Tell If Your Goldfish Is Sick?
Your fish will start losing their appetites, as their bodily functions fail, and they will become increasingly lethargic. How To Know If Your Goldfish Is Sick – Related Questions How long does a goldfish live? Goldfish have a lifespan averaging about 10-15 years, with some varieties living up to 30 years when provided with proper care.