| Phreatobius | |
|---|---|
| |
| Phreatobius n sp | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Heptapteridae |
| Genus: | Phreatobius Goeldi, 1905 |
| Type species | |
| Phreatobius cisternarum Goeldi, 1905
| |
Phreatobius is a genus of very small catfishes (order Siluriformes) from tropical South America.