How can you tell if a molly fish is a boy or girl?

my cats babys are like a week and a few days old when can I tell if her babies are boys or girls??

how can I tell if my canary is a boy or girl??? is it like humans?

i know u can tell its a girl if it has a pink beak and a boy has a blur beak but i have two parakeets for about 5 years and t...

Is a black molly can be grow to be a sailfin molly?plss answer

I can't see it's you know, but it just might be because its too small or it doesnt have any D= because like I was hanging i...

I gote 3 fishes at the store and one of them is fat and lopsided and the fishes in the fish tank chase her.

I all was wanted to now if my teddy bear hampster was a boy it would really change a lot is he a girl or boy

I have one guppy and one molly that I think mite be pregnant! How can I tell that my fish are pregnant before they have thei...

How do I tell if a goldfish is a boy or girl?

When my baby mollies are big enough can I put them with there mother??