There is no difference
Female goldfish are usually bigger than male goldfish.
Usually a female goldfish mates with a male goldfish!
Well yes you need a male goldfish and a female goldfish to have babies but it takes allot of time to breed them.
goldfish start out with female and then turn into male!!!!!!
Fancy goldfish can be male or female.
No, only black goldfish are black.
You should not put a male betta with goldfish's.They are aggressive and will fight with goldfish's goldfish give off ammonia and will kill the Betta's.
Many colors. I had two male goldfish. One was white and the other one was red.
A lot like female goldfish, actually. Seriously, I don't believe there are any visual differences in basic goldfish genders.
I have only heard them referred to as a "Male "
The white dots mean the males are ready to spawn. The spawning procedure of goldfish is to chase one another.