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Here's another one (from www.apistogramma.net)
This picture is several years old and the fish looks a bit different, but it was identified as A. sp. Putumayo, too. (by I. Koslowski).
As far as I know A. sp. Pebas and A. sp. Putumayo are two different, but related, species. A. sp. Pebas has a double caudal spot while A. sp. Putumayo has the more typical single caudal spot (this is more easily seen on females). There are other features that differentiate them, but this is the most easily seen. A. sp. Pebas is only found in the lower RÃo Ampiyacu. A. sp. Putumayo is found in the m-u RÃo Ampiyacu and RÃo Algodon (Putumayo system).