I have never heard of a freashwater starfish, nor a saltwater goldfish, and neither will be happy in the other's water, so no, they cannot live together. If you like starfish, you could get a little saltwater tank for one or two.
Goldfish are not a tropical fish. In addition, they are egg bearing rather than live birth.
A guppie is a tropical fish and should be kept in an aquarium with other tropical fish, a goldfish is kept in a bowl or tank in cold water - the 2 cannot be kept together because of the different in the temperature of the water
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.
There are about 1,800 living species of starfish. They live in all the oceans of the world. The greatest variety live in the tropical Indo-Pacific Ocean.
Technically , both require different environments. Goldfish likes cold water and angelfish likes tropical. However, goldfish can survive in warm water so both can be kept, leaving one of them unhappy.
yes
None, goldfish are cold water fish, so having a tropical fish as a tank-mate just wouldn't work because tropical fish need to live in warm water.
Goldfish are meant to live in cold water, not the warm water in a tropical aquarium. This is a huge reason why goldfish and tropicals shouldn't be in the same tank.
Angel fish are semi aggressive fish. They may have a tendancy to pick on the gold fish. Also, angelfish need tropical warm water to survive. Gold fish like cold water. I would not put them together. If the Angel is big enough it will eat your goldfish.
A swordtail is a tropical fish and a goldfish is not. The swordtail would need a higher temp. than the goldfish. Depending on where you live it probably wouldn't survive the winter.
Goldfish may be kept in an uheated fresh-water aquarium. They are considered ill-suited to live in a heated tropical fish tank, as they are used to the greater amount of oxygen in unheated tanks.