No, a gold fish is clean
No fish is really "dirty." I have heard of goldfish clouding up water faster, but I haven't raised goldfish in years. All I have are tropical fish.
Zero, goldfish need very clean cool water and are very dirty fish.
Tetras (unlike goldfish), do not excrete a lot, so in essence they would be "clean" fish.
Clean water of course! Dirty water is full of pollution, and makes it harder for the fish to breath. Also, dirty water that contains high amounts of ammonia, nitrite, and/or nitrate can actually cause long term gill damage in goldfish.
Basically... the waters dirty Either you put too much food in and didnt scoop the leftovers out after a few minutes, or its just full of poo. Goldfish bowls are really bad for fish to live in, the smaller the worse. They get dirty really easy and when the water gets cloudy, the fish can get diseases and die
a goldfish is a feeder fish. I kind of disagree with the answer above. Yes, goldfish CAN be feeder fish, but they aren't necessarily feeder fish. Feeder fish are really fish that are rather small and are fed to other animals, and that are for some reason thought as not being as precious as other "pet" fish. So a feeder fish and a pet fish are two different kinds of fish, really. Not all goldfish are feeder fish. There are expensive goldfish, more than 10 dollars per fish! Then there are those goldfish breeded to be eaten that are sold as 75 cents per fish. So there are "pet" goldfish and "feeder" goldfish. So, a goldfish is not necessarily a feeder fish.
They are very-low maintence,so bigger fish than a goldfish would be messier.
No, a goldfish is classified as a fish.
A goldfish is a fish, a member of the carp family. Carp fish are freshwater fish.
Betta fish are best as a solitary fish and are not compatible with goldfish.
goldfish are very messy fish, they most likely won't hurt another fish but they are so dirty and expel so much waste that the other fish will die because of the waste. If you have a pond female bettas are good, as long as you have some form of filtration. If you have a tank algae eaters can go in and some times mollies.
I think a goldfish is a consumer because if the other fish's are consumers then goldfish are fish they might be consumers.