That Dumerelli.. how did you find out it was Dumerelli? Not questioning you, just curious.. collection locale? body structure? looks similar to some humerosa's I have seen but I don't know much..
These Cichla piquiti "Tocantins" and the one on the left is a big and old Satanoperca leucosticta.what type of PBASS those are?and in the same pic what is the fish on the left?