Trichomycterinae
| Trichomycterinae | |
|---|---|
| |
| Trichomycterus rivulatus | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Trichomycteridae |
| Subfamily: | Trichomycterinae Bleeker, 1858[1] |
| Type genus | |
| Trichomycterus[1] Valenciennes, 1832[2]
| |
| Genera | |
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see text | |
Trichomycterinae, the pencil catfishes, is a subfamily of freshwater ray-finned fishes belonging to the family Trichomycteridae, the pencil and parasitic catfishes. Many of the genera are diagnosed by putatively apomorphic characters, whereas Trichomycterus is defined by the lack of those specializations and is likely not monophyletic.[3] This subfamily has historically served as much of a wastebasket for trichomycterids that lack the specializations of the other subfamilies.[3] Species of Trichomycterinae dwell in headwaters and small, cold clear water streams running over stony beds. Due to the patchy distribution of their habitats, trichomycterines generally have restricted geographic distributions, thus display a high level of endemism.[4]
Genera
Trichomycterinae contains the following valid genera:[2]
- Bullockia Arratia, Chang G., Menu-Marque & Rojas M., 1978
- Cambeva Katz, M. A. Barbosa, Mattos & W. Costa, 2018
- Eremophilus Humboldt, 1805
- Hatcheria C. H. Eigenmann, 1909
- Ituglanis W. Costa & Bockmann, 1993
- Oreiadoglanis W. Costa & Katz, 2025
- Rhizosomichthys Miles, 1943
- Scleronema C. H. Eigenmann, 1917
- Silvinichthys Arratia, 1998
- Trichomycterus Valenciennes, 1832
References
- ^ a b Richard van der Laan; William N. Eschmeyer & Ronald Fricke (2014). "Family-group names of recent fishes". Zootaxa. 3882 (2): 1–230. doi:10.11646/zootaxa.3882.1.1. PMID 25543675.
- ^ a b Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Genera in the family Trichomycterinae". Catalog of Fishes. California Academy of Sciences. Retrieved 22 November 2025.
- ^ a b Fernández, Luis; de Pinna, Mario C. C.; Armbruster, J. W. (2005). "Phreatic Catfish of the Genus Silvinichthys from Southern South America (Teleostei, Siluriformes, Trichomycteridae)". Copeia. 2005 (1): 100–108. doi:10.1643/CI-03-158R2. ISSN 0045-8511. S2CID 85875502.
- ^ Bockmann, Flávio A.; Sazima, Ivan (2004). "Trichomycterus maracaya, a new catfish from the upper rio Paraná, southeastern Brazil (Siluriformes: Trichomycteridae), with notes on the T. brasiliensis species-complex" (PDF). Neotropical Ichthyology. 2 (2): 61–74. doi:10.1590/S1679-62252004000200003.