Pasaichthys
| Pasaichthys Temporal range:   | |
|---|---|
| Artist's reconstruction | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Actinopterygii | 
| Order: | Acanthuriformes | 
| Family: | Monodactylidae | 
| Genus: | †Pasaichthys Blot, 1969  | 
| Type species | |
| Pasaichthys pleuronectiformis Blot, 1969  | |
Pasaichthys pleuronectiformis is an extinct, prehistoric moonyfish that lived during the Lutetian epoch of Monte Bolca, Italy. The average length of its fossils is about 6 centimeters. In life, it would probably resemble its living relatives of the genus Monodactylus.