Tridentinae
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| Tridentinae | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Trichomycteridae |
| Subfamily: | Tridentinae C. H. Eigenmann, 1918[1] |
| Type genus | |
| Tridens[1] C. H. Eigenmann & R. S. Eigenmann, 1889 [2] | |
Tridentinae is a subfamily of freshwater ray-finned fishes belonging to the family Trichomycteridae, the pencil and parasitic catfishes. These catfishes are commonly known as the tiny pencil catfishes.[3] The species in this subfamily are found in South America. Tridentinae are characterised by having a very long anal fin which is supported by in excess of 15 fin rays.[4]