07-29-2010, 07:46 PM
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The pictures are Xenophallus umbratilis, golden teddies, in the first pair of pictures. The second set of pictures are Heterandria formosa, called least killies, although they are not killies at all. Both are wild type poeciliids Eileen. They are not especially hard to find if you hang out in fish club auctions like I do but are near impossible to find in a fish shop. They are both quite small fish3.
Biokid, the Platy
cannot change sex, it is determined in Xiphophorus genetically, unlike some cichlids. Some do develop their sex apparatus later in life than others though.