Male Or Female?

[NewToThis2]

I have a desk tank that has housed my male dalmation molly for some time now. Deciding he needs a friend I asked for a male dalmation platy. (The store was out of mollys) I have never had a platy before but based on what I have read on the internet "he" looks more like a "she" to me. How can I be sure? [She] is still getting used to the tank, every time I try to take a picture [she] hides. I will post one asap.
THANKS for the help!

 

[FishBlast]

I have a desk tank that has housed my male dalmation molly for some time now. Deciding he needs a friend I asked for a male dalmation platy. (The store was out of mollys) I have never had a platy before but based on what I have read on the internet "he" looks more like a "she" to me. How can I be sure? [She] is still getting used to the tank, every time I try to take a picture [she] hides. I will post one asap.
THANKS for the help!

The fin under the tail is fan-shaped (female) instead of pointy (male). (that fin just after the place where the fish poops).

 

[5teady_2012]

I wrote a article about this somewhere on this forum, but cant find it, so here is the picture i still had stored in my fish files

The male has a gonopodium, where the female has a anal fin

 

[OldMan47]

We still have a clear thread for sexing livebearers 5teady. It is at the top of this section and can also be reached using a link in my signature area. It covers both the common poeciliids like mollies and also the less common goodeids that are sexed in a different way. All of the pictures came from my own tanks.

 

[5teady_2012]

Where abouts old man? i see no thread about gender?
Only pinned threads i see is the usual 5 thats always been there?

EDITED

I can see them all now, for some reason when i was on the ip board classic skin, i could not see them oldman, maybe you should make admin aware of this incase others are on this skin too.

Infuture i will direct memebers to your thread now i can see