Endlers is the most highly colored of the wild "guppy" populations/species, so I doubt the fish in question is anything near 100% Endlers. But who knows...
A different color does not a different species make. The various colors available in Poecilia wingei/reticulata are just examples of biodiversity; they can all interbreed and are the same species as far as I'm concerned.
This and this and this are all Endler's:
http://www.akvaryumd...ilia_wingei.jpghttp://www.bonniedyr...ndler_guppy.pnghttp://foro.acuarios...0endlers-1-.jpghttp://www.guppyklub...iel_2008_02.jpgActually, I want to take the opportunity to rant about this. I hate species divisions as they are currently set up. In a perfect world, anything that can breed together and have fertile offspring should be the same species. Xiphophorus hellerii (swordtails) and Xiphophorus maculatus (platies) can have fertile offspring with one another, yet they are considered different species. Why? Because there is a morphological difference; swordtail males have swords on their caudal fin and platy males don't. The platy body is also more compact, as compared to the elongated body of the swordtail.
I'm moderately fine with that; swordtails and platies are indeed morphologically different. However, the length of the sword varies. From the extremely long Xiphophorus alvarezi (which can fertile-ly reproduce with hellerii) to the tiny nubbin you see on the pet store "swordtail" that is descended more from platies than swordtails, the whole determination of which fish is a swordtail and which is a platy is completely arbitrary. And then you throw things like those mutant "balloon platies" into the mix, which look nothing like the morphological standard for Xiphophorus maculatus, and I gotta say, I think the world's gone crazy with its naming systems. This is getting ridiculous. It should be that if it can interbreed fertilely, it's the same species. The end. And everything else is a regional morph.
It's such a sliding slope. At what point is something a different species? When it looks slightly different? When it 'breeds true'? If so, then why not have a red swordtail be a different species than a black one be a different species than a clear one? *headdesk* This, people, this is why I'm not a biology major. I can't stand the taxonomy system. It drives me crazy.
Edited by EricaWieser, 05 November 2010 - 12:29 PM.