This bandicoot is shown in black and white because this was shot in the darkness of the nocturnal animals exhibit, and the only light was a dark red.
This image shot with the Sony 200-600mm G lens at 200mm on a Sony A1, at ISO 32000 f/6.3 1/50. The image comes out rather well, despite being shot at the highest (unboosted) ISO available. No post-processing noise reduction or sharpening has been applied. This image is the full frame captured.