Endler's livebearer or guppy?

I would say wild guppy. The part of the body between the thickest part of the body and the tail looks too thick to be Endler. Is the ring around the black dot on it's tail white or light purple? White around a peacock dot on an Endler is rare, have never seen a pic of an Endler with a ring of light purple. Very pretty markings, though! I would have had a hard time not taking him home, too! :) It would be interesting to watch as his colors develop more.
The area around/under the dot is actually a whitish-bluish-purplish-metallic-lilac color. :) Very hard to describe.

Thanks for all of the input, guys! Suppose we'll just have to wait and see. =/
 
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