{"document_url": "https://en.wikipedia.org/wiki/Pseudochromis_melanurus"}
Species of fish
Pseudochromis melanurus, the black-tail dottyback, is a species of ray-finned fish from Tonga and Fiji in the Pacific Ocean, which is a member of the family Pseudochromidae. This species reaches a length of 4.0 cm (1.6 in).