Unusual looking black molly

Yes, it is! And its a male! Apparently only 1 in 10,000 are male... and the males are sterile!
I think that information is for the Amazon molly (Poecilia formosa) not for the black ones in the picture (Poecilia mexicana/sphenops cross? ...not an expert on species origin).
Unless I got unusual rarities from PetSmart with the male black mollies with orange markings on the tail and my females are reproducing asexually (several babies growing well right now), the black mollies with orange tails are neither rare nor sterile...
Images from google search are fairly common of black mollies with orange tails:
1 2 3 4 5 6 7 8 9 etc.
 
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I see google images of them

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Though my photography skills are not great, I did get one photo that shows the orange tail on a male and a female black molly in my tank. I just transferred them to a new tank shortly before the picture, so the water is a little bit cloudy. The females only have slight hints of orange, but the males have a distinct orange caudal fin fringe.

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IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

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