A Platy is a Platy is a Platy.(Xiphophorus maculatus variatus) The fancy name makes no difference. The gestation period for a Platy is about 3 to 4 weeks under perfect conditions but can take up 3 or 4 months if conditions are not to the fishes liking. If conditions are really bad she can refuse to let them out and they will be still born eventually (sometimes this kills her).
The female has a triangular ventral fin. The male has a pointed one that can be swung around in many directions in order to funnel the sperm(milt) into the females "cloacca". It is called a "gonopodium.
A Platy is a Platy it is either a Xiphophorus maculatus or X. variatus. Colour does not matter at all. They are all the same species and can interbreed. They can also cross breed with Swordtails (Xiphophorus helleri).
A platy is a type of tropical fish. It is not a quantity or measure so one can not have a "platy of" anything including guppies.
yes
Make sure there are lots of decorations, enough gravel, and plants. The female platy will lays her eggs on these.
If you have a male and female Platty together I can guarantee that the female is pregnant (gravid) no matter what you think.
All livebearers can be sexed the same way. The female livebearers all have a triangular anal fin and in the males, this fin is elogated and pointed like a finger.
I don't think so.
A female platy will be more rounded than a male platy, provided the fish you are sexing are a little mature, the older the fish the eaiser it is to sex the fish. The main way of sexing livebreeders is a little more reliable. Look at the bottom of the fish, just behind the pectoral fins and a little bit behind the anal opening. The anal fin in the female fans out in a triangle shape pointing downwards when she is relaxed. The male's anal fin is modified into a penis-like organ (gonopodium) which points backwards and does not fan out when he hovers in the water. This method works for all livebreeders (platy, guppy, molly, swordtail) and not just any particular colour (though sunset mickey mouse sounds very pretty! My male is a sunset helmethead with black sides.) The male sexual organs are some of the last things to develop and so juvenile females suddenly switching to male is quite common.
yes i have one my white female bred with a black male
The following link has a nice picture of a platy: http://asiatropicalfish.blogspot.com/2007/08/new-platy-fish-galaxy-platy.html
tell more about why its not breeding what is its behavior Mabe the platy tank is not suitable for the platy pair try adding more plants and hiding spaces for the fish and feed them more of a variety of foods flake + blood worms+live or frozen foods if possible