well...we know its a chracin.
cyprinids dont have adipose fins.
i cnt come up with any SA characin except the chalceus...so imma go with african as well.
this fish has me going nutty, i cant figure out what the hell it is and i have basically stumped some of the greatest minds in fish keeping, the mfk elitists. i almost have to find out what it is and buy one now just because.
Try contacting someone at the aquarium or zoo. And ask them what species it is. It would be better to do this in a email. Cause they will most likely have to look it up. Include the picture and what tank it was in.