No because the coy is a fast growing, aggresive fish. The goldfish is a slow moving fish and very docile. The coy, once it outgrows the goldfish will start to eat the fins and constantly attack them. I have seen it happen many times with people who think they mix well. They will however live together in a large outdoor pond if there is enough room, food and cover.
yes
No. Goldfish are freshwater fish and tropical starfish are saltwater fish.
The best thing to do is ask the shopkeeper in the fish shop and find out first but goldfish go together with no problems if you are lucky because some goldfish can't live together. http://en.wikipedia.org/wiki/Goldfish
no turtles will eat any fish they can catch
yes, as long as you have as your tank is large enough for them both.
Yes they can. I raised them together many times.
They can but they shouldn't. Gold fish like colder water and guppies like warmer water. They can live when the water temperature is in that in between range when they are both not comfortable.
goldfish do not live on land
tanga hndi eh bawal na gagu They can.
Probably, but usually the comet goldfish will get all the food and/or the other goldfish will become miserable. This has happened to me before and I do not recommend putting them in the same tanks. Try putting the fancy and comet godlfish seperate!
Bettas and goldfish cannot live together. The bettas will be aggressive towards the goldfish because of its flowing fins. Also a betta lives in tropical waters, 75-78 degrees. while a goldfish is coldwater 68-70 degrees.
No because they are smaller than goldies and they might mistake them for food and accedentally eat them.