Teleostei (teleosts) >
Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Tridentinae
Etymology: Tridensimilis: Greek, tres tria = three + Latin, dens = teeth + Latin, simil = similar, equal (Ref. 45335).
More on authors: Eigenmann & Eigenmann.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal; pH range: 5.5 - 7.0; dH range: 2 - 10. Tropical; 20°C - 30°C (Ref. 13371)
South America: Amazon River basin.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.0 cm TL male/unsexed; (Ref. 39970)
In the sand of shallow rivers and creeks; parasitic, entering gill chambers of larger catfishes; also known for entering, probably by mistake, the ureta of mammals urinating under water (Ref. 13371).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
de Pínna, M.C.C. and W. Wosiacki, 2003. Trichomycteridae (pencil or parasitic catfishes). p. 270-290. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 39970)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Traumatogenic (Ref. 13371)
Human uses
Fisheries: of no interest
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