Of course!
If the goldfish is swimming in water, it is alive.
A living organism
Yes, goldfish are living things too.
the goldfish is a living thing
an living organism
Yes...
living organism
Yes. It should be fine. I have 2 regular goldfish living with a bubble eye goldfish and to fancy fantail goldfish, so I think it will be okay.
A non-living organism is a dead organism.
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.
Yes. An organism is a living thing. A hamster is a living thing. Therefore, a hamster is an organism.