Goldfish

There are so very many species of tropical fish. Some will live happily in groups (shoals/schools) of their own kind and others are happy with almost any species. There are the carnivores who will eat anything small enough to swallow and of course there are those species who do not like to have any company at all. So the answer is. If you choose the right species to mix together there will be no fighting or bullying but if you choose the wrong ones, you could have mayhem in your tank.

One goldfish needs at minimum a 20 gallon tank, with 10 additional gallons for each goldfish you want to add (that's 40 gallons for 3 goldfish). While this does sound like a lot, it's necessary for goldfish due to both their potential adult size, and because they are messy fish & produce a high amount of waste.

That happened my fish a short while ago my friends got me him as a birthday joke but he wasn't eating and was just floating at the bottom so I went into the pet shop and they gave me these drops and now he's as right as rain I suggest you get these

It's best to only put male and female betta fish in the same tank/bowl if you are breeding them. If they are not breeding and they still stay in the same area, the male would most likely attack the female, so keep the female away!

Also, if you are breeding betta fish, make sure to remove the female betta after she lays her eggs, as the male will care for them and chase the female away.

absolutely yes you can put your fighting fish in the water even without conditioner added I do it all the time, making sure the new water temp is the same as what I'm replacing, add water conditioner and you are good to go.

It is because they dont have buttcheeks to chop it off so it just dangles

yes

It is mating season for fish when it is really hot and dry.

The simple answer is yes.

If you are refering to a man/laboritory made "Glo-fish" then the species is the Zebra Danio and its' tail in a normal fish is about 3/8"ths. If it is one of the developed long finned types then it could be longer.

No, the Swampert must be a female in order for the egg to be a mudkip

When a female fish (varies) according to type, species, genus and so on is pregnant and then has finally lain eggs, it has grown depressingly weak. Such sophisticated problems tend to make it eat the baby or in some cases babies for energy and also for calmness and calamity.

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.

Goldfish don't get pregnant. They lay eggs (ova). If it is springtime in your part of the world then female goldfish could well have their ovaries full of eggs and be ready to spawn. If they do not spawn, the eggs will be reabsorbed by the body.

Possibly feces?

yes they can swim

Yes they do. Newts and other amphibians should never be kept with fish if you want the fish to survive.

Don't spoil it with too much poking.

Yes because ours keep jumping out of the bowl...

You need a lot of things, unless you are raising goldfish in a bowl.

You need: (for a tank)

A filter

A tank (not recommended under 5 gal.)

Goldfish food

Gravel

Live or fake plants (underwater plants)

Air pump (not required)

Choice of decorations

These can be very expensive sometimes, but it will keep your goldfish living longer and happier than in a bowl

Goldfish come in many different colours. They can be orange, like you normally think of, white, black, blue,silver or any combination.

"Inverted"? as in"upside down"? "Inside out"? please explain. Are you refering to a deformed fish or what?

I'm not certain that an organization regulated goldfish but rather it was done by the government bodies as a whole. Since they are considered an invasive species, there are laws that say they can be bought, sold, transported and possessed, but cannot be introduced into the wild.
This will of course vary country to country, state to state, or even province to province, so you may be able to find a more direct answer by looking up your local laws.

If the light is comming from a sideways direction rather than from the surface of the water then the fish could well turn its back to the light source. If that is not the case then the fish has a swim bladder problem and without treatment will die. Your local pet store may have some kind of medication available.

Coldblooded creatures slow down and the colder the water gets, the slower their metabolism operates. Then, depending upon the species and temperatures reached, some survive and others die.