Скачать или смотреть Unidentified blue tetras - Possibly Hemigrammus rodwayi / armstrongi

I picked up these two specimens at my LFS, they said they came mixed in with some other fish, but they couldn’t ID what species they were. After googling for hours, I think they're a variety of Hemigrammus rodwayi or armstrongi (some sources say they are one and the same). There are a few pictures of blue tetras on the web that claim to be H. roadway - the so called Gold/Brass tetra, although when found in captivity they are a mostly bright whitish silver color despite the common name. Those pictures are the ones that look the most like the ones I have, you can see them here:

http://bit.ly/2taB63G
http://bit.ly/2ss5pWM
http://bit.ly/2scZW5Y

There are very few small BLUE fish like this in the hobby, and they are definitely NOT these:

Green neon tetras (Paracheirodon simulans)
Conchu’s blue tetra (Boehlkea fredcochui)
Blue tetra (Knodus borki)
Neon blue rasbora (Sundadanio axelrodi)

If anyone has ever kept this type of tetra and know its exact species let me know!