n = 2
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Cairnsichthys bitaeniatus | Allen, Hammer & Raadik, 2018 | Cairnsichthys bitaeniatus | Melanotaeniidae | |
| Cairnsichthys rhombosomoides | (Nichols & Raven, 1928) | Cairnsichthys rhombosomoides | Melanotaeniidae | Cairns rainbowfish |