Pseudomugil ivantsoffi is a species of blue-eye from the subfamily Pseudomugilinae, part of the rainbowfish family Melanotaeniidae.

It is endemic to Western Papua in Indonesia.

[2] It was described in 1999 by Gerald R. Allen and Samuel J. Renyaan from types collected in southern Irian Jaya at two locations one a tributary of the Kopi River approximately 1 kilometre (0.62 miles) of the Tembagapura Road and from the mile 39 Camp of the Freeport Mining Company[3] in 1995.

[2] They named the species in honour of the ichthyologist Walter Ivantsoff of Macquarie University in Sydney.

[4]