Leong, if you hybridise my endlers guppy with the fancy I will slap you on your head.... (LOL... just kidding bro.)

Shudders to think what ppl's idea of "species defferential" is on this forum.

Poecilia sp "Endlers" is NOT your common feeder fish guppy. They breed thru.. ie they babies all look similar to their parent fish where as the wild Poecilia reticulata throws a whole lot of variation in pattern/colour in their fry. The colour on true P. endlers is also a lot brighter.

Below is a good read on the nitty gritty of P.endlers by the man who collected it. Prof. John Endler.
http://www.thekrib.com/Fish/p-endlers.html