When the pupils on a goldfish are very large and dilated, this can mean one of two things. The fish could have a parasitic infection or a bacterial infection.
Dilated pupils refer to pupils that are abnormally large. This can be caused by various factors such as low lighting conditions, drug use, or medical conditions like eye trauma or certain neurological conditions.
double-tailed Celestial eye goldfish or Choten gan is a double-tailed breed of fancy goldfish that has a breed-defining pair of telescope eyes which are turned upwards, pupils gazing skyward.
IF you mean literally a goldfish, no. Just no. Otherwise provide information on what you mean by a "goldfish".
If it is as old as a goldfish that can, it can.
When goldfish are large enough, they are called carp. Tilapia is not a goldfish or a carp, although the species does have some similarity.
Goldfish need to mature before they can lay eggs and they can get pretty large (6" or more). By the time they are large enough, they have outgrown a fish bowl. So technically, the answer is no. You will need large goldfish in a large tank before you can breed them.
Nothing. A goldfish is a goldfish, not a gold fish.
Dilated pupils not responding to light occurs in deep coma and death. The iris doesn't contract, thus pupils fail to automatically respond to light.
Its when your pupils get really small like when light hits it
Koi
Grams.
large fish.