Apistogramma sp. mitu
Colletect by Ernst and co in 2019. They were collected as Apistogramma sp. D6.
After some research by Frank Hättich, Uwe Römer, Daniel Mejia, and Tom Christoffersen it apear is seem to be Apistogramma sp. Mitu.
Read the whole artikel at the website of Tom C. Click here for the link.