No fancy goldfish should not be housed with the more common varieties of goldfish because common goldfish are more aggressive and can swim faster which in turn would result in competition over food causing the fancy goldfish to become stressed and more susceptible to disease. Also common goldfish may damage the fancy goldfish's delicate fins by nipping at them.
This (above) may be true in some cases, but I have a 15' x 8' outdoor pond with 2 fancy goldfish, 2 Sarassa Comets (goldfish) and 2 common goldfish and they all get along fine with each other as well as with my 2 Koi. I watch them eat and everyone gets enough, although the fancies are timid when it comes to getting the food. I wait until the others have eaten alot and throw out more food in their direction. Both my fancies are huge and the biggest I have ever seen anywhere.
yes as long as they are the same goldfish..
Fantail goldfish are a hardy breed, strong swimmers and they compete well for food with the ryukin, shubunkin, comet or common goldfish; making these goldfish breeds good tank mates for your fantail goldfish.
if it is acting strange and not like normal fish
there are three basic breeds: fantail goldfish, comet goldfish, and common goldfish. if you are getting goldfish for the first time, i would recommend common goldfish as they need the least care.
Some common breeds of goldfish are: the Black Moor goldfish, the Ryunkin goldfish, the comet goldfish, the common goldfish, the Calico Fantail goldfish, the telescope eye goldfish, the bubble eye goldfish, the pearl scale goldfish and the Oranda goldfish.
A black moor is a type of goldfish much like a ryukin, fantail, or even an oranda is a goldfish, so yes, they can live together
It is common for young goldfish to have dark makings that eventually disappear as the fish grow/mature.
Fantail goldfish are black, white, gold or a mix of all three (also known as calico fantails). I used to have a gold fantail and a white fantail which lived for about 5 years but ive heard they can live longer.
The fantail goldfish is asserting it's dominance over the common goldfish. The fantail goldfish has already established in its mind that the whole tank is its territory and will fight any other fish that try to change that. This is normal when adding new fish to an established tank and they will usually continue to fight for a couple more days. During this time make sure to give the fish plenty of food to eat and some place for the common goldfish to hide. If they do not stop fighting after several days than I would recommend moving the common goldfish to its own separate tank of at least 20 gallons. Another reason (though not as likely) is that the common goldfish is a female and the fantail is a male. A male may chase a females rear- this is normal but if he harrasses her- remove her immediately.