The following link has a nice picture of a platy: http://asiatropicalfish.blogspot.com/2007/08/new-platy-fish-galaxy-platy.html
Pictures of male and female reproductive organs can usually be found on sites that have to do with the physiology of the human body.
White rabbits can be either male or female. See the related question below for info and links with pictures that can help you identify if your rabbit is male or female.
yes. A male will have a black bum
There are many places where you can find a picture of the male and female turtle in a species. You can look at your local library for books with these pictures for example.
it depends what kind of turtle most of them you can tell by looking at the bottom shell-the plastron if it is concave it is a male, if it is flat it is a female.
The male and female emperor penguin are similar in plumage and size. Loon at the links I will place below for pictures.
You can tell them apart by the gonopodium, a tube-like structure at the front of the anal fin. It is only present in the male of livebearers. Common livebearers include mollies, platys, swordtails, and guppies. the females have a fan like fin
You can see if a turtle is a male or female by their tail. A female will have a shorter tail than a male.
See the related links below for websites that feature pictures depicting the differences between male and female genitalia. See the related question below for more info.
I have a tank of all male Red Wagtail Platys, they don't fight besides a little chasing, but no nipped fins. Granted, they are still fairly young and i'm not sure about adults.. I would say they wouldn't fight though.
There are many websites available online where you can find puppy genitalia pictures, which will help you distinguish male puppy from female puppy.
Well, you look at the private spot and if something dangles it is a boy