Peru Apistogramma identification black triangle

[JoseF]

Was shopping on this website and asked the seller to identify. He stated that the were from peru but that otherwise he had no idea as to species.
Any ideas?
On key feature is the all have a distinct triangle on base of caudal fin. One fish seemed almost white which was interesting.
Fish listed at dansfish.com/product.detail/4181
thank you. I did some research online and couldn't locate any matches. Old post from Mike... sp cruzi San rafael? Do they have triangular spot

 

[Frank Hättich]

It's Apistogrammoides pucallpaensis.

 

[JoseF]

Thank you. Very interesting. One of the smallest of all apistogramma.
Appreciate your identification.