Yes of course. Otherwise, how would they breed?
Goldfish see in color.
I think you mean "Fantail" and the answer is goldfish can see no better or worse in the dark than most other fish. They are normal in their light requirements.
Yes.
If you have recently added a new goldfish to a bowl, it is possible that the original tenants will see the new fish as an intruder. I had 3 goldfish and they actually taunted the new fish I added to the tank, keeping him at the other end of the tank. Eventually, they ate him. No joke.
from eBay write goldfish alive and you will see them but they are no that excpensive :)
I am sure the meaning is quite literal. They are goldfish that eat other goldfish.
Other goldfish, preferably This will ensure that the goldfish will not be injured by other tankmates and also ensures that the other tankmate's gills are not damaged by the large amounts of toxic wastes (ammonia) that the goldfish produces daily.
No goldfish would prefer to have a lower temperature than any type of tropical fish, however some goldfish can withstand higher temperature if they are slowly acclimated to it! But in the long run goldfish would be happy with other goldfish and tropical fish with tropical fish... there is a reason you don't see the goldfish with the tropical fish in a good aquatic store.
Normal goldfish can see both in front and to their sides. The fancy bubble eyes etc are lucky if they can see at all.
Goldfishes There is no plural for goldfish. Goldfish itself is plural. Example: Hey Bob, can I see that goldfish you caught? Example2: Hey Bob, can I see those goldfish you caught?
yes
yes