Gymnocorymbus
| Gymnocorymbus | |
|---|---|
| Gymnocorymbus ternetzi | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Actinopterygii | 
| Order: | Characiformes | 
| Family: | Acestrorhamphidae | 
| Subfamily: | Pristellinae | 
| Genus: | Gymnocorymbus C. H. Eigenmann, 1908 | 
Gymnocorymbus is a genus of small characins from the Amazon, Paraguay, Orinoco, Courantyne, Gurupí and Parnaíba river basins in South America. These tetras are popular in the aquarium trade.