Yes I believe they are related to carp.
Goldfish do not populate any rivers. This because goldfish are not wild animals, so for one to be living in a river would be about the equivalent of a golden retriever living in the woods. Goldfish do not populate rivers, however, they can be commonly found in outdoor ponds.
No, goldfish are freshwater fish. Any goldfish you buy in the store are tank bred and not wild caught.
No, they are a breed of dog and are not endangered.
Of course, many wild animals.
Thankfully, yes, there are LOTS of wild animals in Washington.
Just about any form of Carp is related to (Cousin?) the goldfish.
A wild animal is a living creature that is not a plant, and is untamed or domesticated, in a natural state.
Goldfish may only appear to eat fish food but technically they are eating other animals because inside fish food is a rare animal named the bbanornet which gives protein to small fish such as the goldfish.
any really wild animals like lions and giraffes and elephants etc
Wolves, Foxes, wild cats, wild dogs, birds of prey and any other wild predators in that area.
There is a kind of goldfish called the 'Shubunkin' with purple stripes on it but there is no pure purple goldfish species.
yes scw