The only way you may be able to tell the difference is during breeding if you have at least one male & one female. The male will chase the female and poke his head against her side & belly to try to get her to release eggs.
Otherwise they behave the same way without knowing which is which.
Could be a boy or a girl ....
the girl is bigger
Usually if your goldfish is a boy it will chase the girl around..also it will be more narrow if you look at it from the top and the girl will be fatter (due to pregnancy). Another way to tell is the fin. If the fin is more of a wave it is a girl; if the fin is more of a spike then your fish is a boy. Hope this helps!
I asked in a pet shop and they said there is no possible way to find out sorry.
sorry but there is really know possible way to know i am a professinal vet soo...... ya
There is no way to tell.
a boy has a thinner body a girl has a fatter bodya boy has little white spots on it's fin and a girl dosn't
Only a dna test can determine.
right after he meets a hot girl/boy stupid.
the gold fish is a boy if both its sides are the same size, but if the fish is a girl one side will be bigger than the other (it looks pregnant on one side of its body) And also sometimes girls are pregnant.
yes. it changes your person from a boy to a girl. i know you hit L + R but i dont know the code.
i don't know if it is a boy or a girl