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yes, they are I know they breath through their gills but by opening their mouths it's like breathing through your mouth/or drinking... but if they are doing that like super fast they are probully nervous or scared (it happened to mine when I changed its tank ) if it does it when it sees you you have to be more calm they get scared too
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoYes fish can raise or lower themselves in relation to the surface of the water with ease. They have an organ called a "Swim Bladder" which enables them to do this.
Wiki User
∙ 14y agoThey are sucking in water in much the same way as you suck (breathe) in air. The water is passed over their gill fillaments and very basically, oxygen is taken in and CO2 is passed out.
Wiki User
∙ 11y agoyes they do
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why does the goldfish move its mouth so much?
Because that's how it breaths. Are you really that dumb?
Can goldfish move large items around their tank using their mouth?
No,they are to small and not strong enough.
How does goldfish move around?
Well goldfish move their fins of course.
How does a goldfish catch its food?
Its mouth
If you move to another state and you have a goldfish what do you do?
Take your goldfish. They will travel.
What would happen to a goldfish that cannot open its mouth?
if the goldfish's mouth couldn't open then it wouldn't be able to eat and it would end up dying.
Where do goldfish eggs come the mouth or the bottom?
If you mean that if they come from their mouth or their bottom, it's bottom
Do goldfish breathe through their mouth or through their gills?
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.
What male fish holds eggs in its mouth?
Bettas and goldfish
Guppy eat goldfish?
Guppies don't get large enought to eat goldfish. They will eat anything they can fit in their mouth. The goldfish might eat your guppies though.-Melchisedek
Will algae eaters eat my goldfish?
It depends, if your goldfish are smaller than your algae eater, and big enough to fit in it's mouth, then very much so. If the goldfish are small, but too big to fit into your algae eater's mouth, then he might just injure them. But your algae eater shouldn't be so small that your goldfish could eat it. The rule with fish that I always go by is, if it can fit into it's mouth, it will be eaten.
Why do goldfish always mouth for food?
They don't. The constant 'Mouthing" is how they breath.
