The Oniboshi lum was an aquatic lifeform of the planet Denkir IV. Subspecies of this species included the Oniboshi lum ran.
This species' name was seen on the chart "Evolution of Intelligent Life on Planet Denkir IV". (TNG: "The Child")
The name of this species is a reference to the Japanese anime and manga series Urusei Yatsura, which features an alien with the name Lum which hails from a planet called Oniboshi.