the bulolo rainbowfish ("chilatherina bulolo") is a species of rainbowfish in the subfamily melanotaeniinae. bulolo rainbowfish are found in the fast flowing, rapid water of the mountain streams in the markham and ramu river systems of north-eastern papua new guinea. it was first collected in 1934 and then not again until 1978. there is insufficient data to suggest the current levels of population of this species.