You will have to wait until the fish is mature and then you will have to observe it during breeding season (Spring time) If it develops white spots on its gills and sometimes pectoral fins also, it is a male. If it gets a chubby tummy it is a female.
Only a dna test can determine.
About at 7 to 8 weeks-DANIELLE LANDRY
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
Could be a boy or a girl ....
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!
the girl is bigger
for only he goldfish or fish know that
nothing
There is no way to tell.
it only has a small tail
Le garçon a un poisson rouge.