| Megalancistrus | |
|---|---|
| |
| Megalancistrus parananus | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Loricariidae |
| Tribe: | Ancistrini |
| Genus: | Megalancistrus Isbrücker, 1980 |
| Type species | |
| Chaetostomus gigas Boulenger, 1895
| |
Megalancistrus is a genus of large suckermouth armored catfishes native to South America.