how do tell male from a female mickey mouse platys?

Answer 1

Just like with guppies, swordtail, mollies and other livebearers, it's in the shape of the anal fin.

Here's some pictures to help you out. these are guppies but the same rules apply to platys.

Females have a fan shaped or normal looking anal fin. That's fin under the bottom of the fish Here's a picture of a female:

http://www.aquariumfish.net/images_01/guppy_female_from_kate.jpg

Males have a pointed tube shaped anal fin. Here' s a picture of a male:

http://www.aquariumfish.net/images_01/guppy_male_red_var.jpg

The female will get dark at the rear of her belly when she is pregnant. The female in that picture is somewhat pregnant. Here's a picture of a very pregnant female:

http://guppyplace.tripod.com/FISH2A.JPG

Hope these help

MM

Answer 2

Gonopodium