Tropical Fish Keeping - Aquarium fish care and resources

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mollygirl1103 03-19-2012 10:36 AM

How to sex a molly
I just got three molly fish from Jones Pet Co. and I need to know what sex the mollies are. The lady at the pet store said that the difference between the males and the females was that the females' tail fins fan out at the bottom and the males' go straight down. I am not very good at judging fins so could anyone tell me an easier way to sex my mollies because i need to make sure that i have two females and one male. Thank you very much!

(P.S Is there any way that I can speed up the breeding process because I am trying to get them to breed and make babies)

SEAWEED54 03-19-2012 10:54 AM

1 Attachment(s)
female bottom fin is more rounded

male bottom fin is more pointed

the pict I drew isn't the best but I think you'll get the idea

there prob still a bit young

usually nothing will happen till they are about a year or so

don't rush them , nature will take its coarse when they are ready

jsagrav 03-19-2012 01:03 PM

Seaweed's right. The fin you need to look at is the one right behind the anus. If it's shaped like a triangle it's female. If it'd long like a finger, it's a male.
Don't worry about speeding them up. Once they start breeding, you'll wish they would stop. Make sure you keep the male to female ratio low. About 1 male to 3 fems. Mine are ready in about 6 to 7 months.

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