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To sex them, look at the bottom back single fin under the rear of the belly. In males it's pointed. In females it's fanned out. Immature males all look like females so watch as the babies grow up. A baby male can take 4 months or more to show his gender.

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15y ago
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14y ago

In all fish the single fin under the belly by the vent is called the ventral fin. Mollys are livebearers. In the case of male livebearers this fin is called a 'gonopodium' it is modified into a kind of pointed funnel along which sperm can travel. In the case of a female livebearer. this ventral fin is a normal triangular shape.

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12y ago

In all fish the single fin under the belly by the vent is called the ventral fin. Mollys are livebearers. In the case of male livebearers this fin is called a 'gonopodium' it is modified into a kind of pointed funnel along which sperm can travel. In the case of a female livebearer. this ventral fin is a normal triangular shape. thx

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7y ago

Near the anus of each fish, there are very different parts for female and male mollies. Males have something that looks like a barb and the female have what looks like a fin, actually it is a fin. The male mollies' barb is actually a tube to get the female mollies pregnant.

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15y ago

Mollies can be sexed by 3 months. All babies appear female once born, but by 3 months, males should have developed the gonopodium (modified anal fin that looks like a little straw).

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11y ago

Mainly when they start getting bigger after a couple of weeks. The guppies with pretty tails are males. The guppies with the short tails a female. The male will also have nicer color.

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15y ago

Males have a pointy thing near it's butt called a gonopodium, they're also a tad skinnier.

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12y ago

A male molly can only walk forwards due to its genitalia

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Q: How do you tell a female molly from a male molly?
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Related questions

Do molly's eyes tell you whether it is a male or female?

Never heard of anything about the eyes. A molly having a gonopodium is a male and one without is a female.


How to tell male and female mollies apart?

On a male molly behind their anal fin is a pointed fin called the gonopondium. On the female it will be rounded.


How do you tell if a black molly fish will take to give birth again?

Idon't no if this will help but if there is a male in the same tank as the female molly then 80% of the time the female is pregnant.


Is a Molly a female cat?

A cat can be male or female A female cat is known as a she cat. A male cat is known as a tom cat.


How does molly breed?

The Male molly chases the Female and it sticks its pointy anal fin in the hole. Then after 4 weeks the Female Molly has babies


What does a female dalmatian molly fish look like?

The female Dalmatian molly differs from the male in that her ventral fin is triangular, his is pointed.


How can you tell which saffron molly is a girl and which one is a boy?

The male's anal fin is long and skiinny. The female's is rounded, fan-shaped.


How can you tell if your white molly is a male?

you can tell by the front fins


How do you know a molly male from a female?

a male will have a pointed fin on the bottom near the back where as the female doesn't. Hope this helps


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