Tridentopsis
| Tridentopsis | |
|---|---|
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Trichomycteridae |
| Subfamily: | Tridentinae |
| Genus: | Tridentopsis Myers, 1925[1] |
| Type species | |
| Tridentopsis pearsoni Myers, 1925[1]
| |
Tridentopsis is a genus of freshwater ray-finned fishes belonging to the family Trichomycteridae, the pencil and parasitic catfishes, and the subfamily Tridentinae, the pygmy pencil catfishes. The catfishes in this genus are found in South America.
Species
There are currently four recognized species in this genus:[2]
- Tridentopsis brevis (C. H. Eigenmann & R. S. Eigenmann, 1889)
- Tridentopsis cahuali Azpelicueta, 1990
- Tridentopsis pearsoni Myers, 1925
- Tridentopsis tocantinsi La Monte, 1939
Tridensimilis brevis is distributed in the Amazon River basin in Brazil, while T. cahuali originates from the Paraguay River basin in Argentina. T. pearsoni inhabits the upper Amazon River basin in Bolivia. T. tocantinsi lives in the Tocantins River basin in Brazil.[3] Tridentopsis species grow to about 2.2 to 3 centimetres or 0.87 to 1.18 inches SL.[4][5][6][7]
References
- ^ a b Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Genera in the family Tridentinae". Catalog of Fishes. California Academy of Sciences. Retrieved 27 November 2025.
- ^ Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Tridentopsis". Catalog of Fishes. California Academy of Sciences. Retrieved 22 October 2025.
- ^ Ferraris, Carl J. Jr. (2007). "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types" (PDF). Zootaxa. 1418: 1–628. doi:10.11646/zootaxa.1418.1.1.
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Tridentopsis cahuali". FishBase. July 2014 version.
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Tridentopsis pearsoni". FishBase. July 2014 version.
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Tridentopsis tocantinsi". FishBase. July 2014 version.
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Tridensimilis brevis". FishBase. July 2007 version.