They don't. The constant 'Mouthing" is how they breath.
Its mouth
a goldfish will jus gobble it all up goldfishes are always hungry
the name of goldfish food is goldfish flake food
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.
Goldfish have pharyngeal teeth which are near the back of the throat, so they may chew their food in some way, but not the same way that humans or animals with normal teeth would
Most goldfish will happily eat maggots as well as branded fish food also, fish will small pieces of bread, but make sure that it's small enough to fit in the fishes mouth
if the goldfish's mouth couldn't open then it wouldn't be able to eat and it would end up dying.
not if it is your pet. you have to go to the oet store for certain pet food for goldfish
goldfish are not always one color because they have different species. Also, goldfish can change colors over time. They won't always be gold or maybe they won't always be white or whatever color your goldfish is.
Goldfish are omnivores, and they can eat lots of vegetables (but don't try feeding them any fruits...I never tried....but wouldn't it be weird to feed goldfish a mango or a peach?). Fish food is all protein, usually, and eating only fish food usually helps constipation happen to your poor goldfish. Imagine humans eating only meat! So I always feed my goldfish pieces of lettuce and the insides of cooked frozen peas. They make my fish healthier. Though I have never tried, some goldfish owners feed their goldfish live food, like those tiny shrimps. It is healthier for your goldfish to eat a wide variety of good, not only fish food.
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.
Yes. Goldfish food is made from veggies.