yes
Goldfish excrete, yes.
The long strand that is coming from your goldfish is poop.
Swim, Eat, Swim, Eat, Poop, Swim, Eat,Poop....
Goldfish poop can be almost any colour depending upon what it has been eating.
it is poop it will eventually pop out while it is swimming around:-)
no. Once you swallow something it goes to your stomach where it is digested. Hydrochloric acid in your stomach then dissolves it.
Where their poop comes out. If it comes out horazontilly, it is a male. If it comes out straight, it is a female. Males are the most common.
It goes though the goldfishes stomach and is eaten and comes out in poop in the next 2days
It won't harm them, but they typically don't eat it. Sometimes they might confuse it for food, but they normally spit it out immediately.
Swim, hide, eat, poop, and chase each other is about all they do. Chasing other fish in a human perspective seems like the most entertaining.
Some common breeds of goldfish are: the Black Moor goldfish, the Ryunkin goldfish, the comet goldfish, the common goldfish, the Calico Fantail goldfish, the telescope eye goldfish, the bubble eye goldfish, the pearl scale goldfish and the Oranda goldfish.
Goldfish and koi fish LOVE cold water, but please note they have no stomachs so they must be fead often and when there is a lot of food there comes a lot of poop.