based on these pics, my initial candidates for what this could possibly be (of the existing bichirs we know) are teugelsi, mokelembembe (based on the bottom fish in the first pic), and retropinnis (zaire green). In one way or another, the fish in the pics remind me of these three.
The bottom fish seems to look different than the other two, but if i assume all three are the same species, then based on how the fish looks (body length, head shape, what little pattern we could see, and color, but of course the color of a bichir out of water can look quite different from in water), and the four different meristics i could gather, i think i've ruled out mokelembembe and teugelsi.
The one i cannot rule out based on meristics is retropinnis. The four meristics fall within the range for retropinnis. While the fish does look somewhat off compared to a retropinnis, e.g. the bottom fish seems to have a more pointy snout, although the top fish seems to suggest it's still quite round-ish, i can't see enough in these pics to rule out retropinnis based on looks/color/patterns.
Basically i can convince myself of either case based on these pics alone. I do hope it's something new, but just trying to not get too excited LOL and look at all angles.
EDIT: btw the four meristics were dorsal finlets, predorsal scales, body length scales to approximate lateral line scales, and prepelvic scales. Granted the last one was the hardest to count accurately from the pics, but i tried counting on both fish in the 2nd pic. For the other three I could only use the fish the guy was holding.