How Do You Tell A Male Platy From Female?

[guppyluvr]

Hi, I was wondering how you tell a male platy from a female? Sorry if this is a stupid question or has been answered before, i'm new to all this.

 

[WILDER]

http/www.fishforums.net/index.php?showtopic=13664

 

[theotheragentm]

If you're lazy like me and won't read all that text, here is the short answer.

The anal fin (on the under side furthest back towards the tail) will look like a tube on a male. On a female it looks more like other fins, a triangle. Hope that helps.

 

[guppyluvr]

Thanks so much!

 

[theotheragentm]

I should note that in fish that aren't mature, what looks like a female may sometimes develop into a male. If you're trying to keep the fish from mating, don't jump the gun and watch your fish. It won't happen instantly. You'll see the anal fin look more and more male before it is able to breed, so just keep an eye out. The presence of a mature male will also slow the development of other males, so just because they are adult in size, doesn't necessarily mean the maleness will be apparent.

 

[guppyluvr]

Ok i'll keep a close eye out! Thanks for all the advice!