The Southern Red Bishop or Red Bishop (Euplectes orix) is a small passerine bird belonging to the bishop and widowbird genus Euplectes in the weaver family. It is common in wetlands and grassland in Africa south of the Equator. North of the Equator, it is replaced by the northern red bishop or orange bishop (E. franciscanus). It has a thick conical bill. Breeding males are brightly colored with red (occasionally orange) and black plumage. The forehead, face and throat are black and the rest of the head is red. The upperparts are red apart from the brown wings and tail. The upper breast and under tail-coverts are red while the lower breast and belly are black.
It is a fairly gregarious bird, nesting in colonies and foraging in flocks. It feeds on seeds and some insects. It often roosts in mixed flocks with other members of the weaver family.
At the start of the breeding season, the males build several nests to attract females. They perform a display flight with their feathers fluffed up. They are polygynous and mate with several females. The nest is most commonly built among reeds and is made of grasses and other plant materials woven together.