No It Is A Natural Action Of A Gold Fish Though If He Is Opening and closing Rapidly It May Be That He Is Worried
A goldfish's breathing rate can be determined by counting the amount of times the goldfish opens and closes its mouth within a set amount of time, ex. 92 breathes per minute.
42 times in one minute
patient sits in the chair and opens their mouth.
Its mouth
the mouth opens to the stomach
The mouth opens into the pharynx.
He named it bubbles. it is a very happy goldfish in a very happy bowl but it died the next day
if the goldfish's mouth couldn't open then it wouldn't be able to eat and it would end up dying.
It just opens its mouth and grabs the food.
it opens its mouth?..................................
If you mean that if they come from their mouth or their bottom, it's bottom
a) Goldfish (all fish) breathe through their gills b) All fish (Including Goldfish) suck water in through their mouth and pass it through their gill filament's.