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It can be A. cf. sp. D24 from Rio Manacacias but it can also be A. sp. Manacacias. Let it color up fully and then show some more pictures if possible in different moods.
Your "agassizii Tefe" male is either A. sp. Tefe or one of the A. sp. aff. agassizii (Netz/net) forms, better pictures are needed to be sure. Your mystery fish is a male A. trifasciata.
They look like A. sp. Kiemenfleck/Gill-spot (D37). There are two known locations of them in the Rio Vaupes. This is the only reason I see why someone might come up with the crazy idea to call them "A. uaupesi".
"Rotkeil" is just one of the a common names of A. uaupesi.
Here are pictures (by Miguel) of A. cf. uaupesi that are said to be from Rio Jufari:
They shown a different caudal pattern than the typical A. uaupesi is supposed to do.
Your male can be Ladislao or Ladislao II or Ladislao III - which one I can't tell for sure without knowing the catch location. Whether the female is the same species I can't tell for sure either. But if they are from the same import or breeder, I wouldn't worry too much.
It's for sure not D50. My guess would be some hoignei-subcomplex species too. However, the exact species will be almost imposssible to tell without knowing the catch location.
I think you have two males. The caudal patch of the smaller one looks more like that to be expected from A. cf. ortegai (Pebas) to me. However, the general problem with ortegai-subcomplex species is that there are many mixed forms (=hybrids) in the hobby (even wild caught specimens due to...
It's a possible explanation but seen in many line bred strains (also of other species like cacatuoides or macmasteri). Poor water quality can also be a cause of shorter fins.
The patterning on the scales in fact points to one of the Netz-forms. But unlike this fish, the Netz-forms usually develop quite long tips on the dorsal, anal and caudal fins. However, there can be quite some reasons why this isn't the case here, in particular if these fish are tank bred.