Some goldfish are male, while others are female.
There is no difference
Female goldfish are usually bigger than male goldfish.
Usually a female goldfish mates with a male goldfish!
goldfish start out with female and then turn into male!!!!!!
Fancy goldfish can be male or female.
No, only black goldfish are black.
Well yes you need a male goldfish and a female goldfish to have babies but it takes allot of time to breed them.
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.