| Freshwater hatchetfish | |
|---|---|
| |
| Blackwinged hatchetfish (Carnegiella marthae) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Characiformes |
| Suborder: | Characoidei |
| Superfamily: | Characoidea |
| Family: | Gasteropelecidae |
| Genera | |
|
See text | |
The freshwater hatchetfish are a family, Gasteropelecidae, of ray-finned fish from South and Central America. The common hatchetfish is the most popular member among fish keeping hobbyists. The family includes three genera: Carnegiella (four species), Gasteropelecus (three species), and Thoracocharax (two species).