The Strickland rainbowfish (Melanotaenia iris) is a species of rainbowfish in the subfamily Melanotaeniinae. It is endemic to Papua New Guinea where it is only known to occur in the Logatyu River, a tributary of the Strickland River, in the Fly River system. It is currently known from only five specimens collected in 1984 by D. Gwyther[1] and it was described by Gerald R. Allen in 1987.