The spotted rainbowfish (Glossolepis maculosus) is a species of rainbowfish in the subfamily Melanotaeniinae.

It is endemic to the river systems of the Markham and Ramu Rivers in Papua New Guinea.

Papua New Guinea.

[2] This species was described by Gerald R. Allen in 1981 with the type locality given as a small tributary of the Omsis River, about 22 kilometers west of Lae in the Markham River system, Papua New Guinea.

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