Golden-Bellied Mangabey
The golden-bellied mangabey  is a social Old World monkey found in swampy, humid forests south of the Congo River in the Democratic Republic of the Congo. It was previously considered a subspecies of the agile mangabey. Little is published about the species and its behaviour has only been studied in captivity.
The only known photograph of golden-bellied mangabeys in the wild is shown below, though though there are more, from captivity.
Its conservation is data deficient, though given the hunting, it is thought that the population is falling.
A tourism industry would definitely help this. Directly below here, is something that will display every article that has been written about this species on this website. I should add, that at the current time, there are none, I hope to link with people in the field so as to have more news coming in. Below this we will add links that would be useful.