Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Trichomycteridae
(Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); diatropoporos: Derived from the Greek diatropos meaning variable, and poros meaning pore, in reference to the variation in the presence of pores i1 and i3 of infraorbital sensory canal of the new species. A noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
South America: endemic to the rio da Prata and rio Turvo basins, tributaries of rio das Antas, in the laguna dos Patos system in Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.8 cm SL male/unsexed; (Ref. 93814)
The type locality is a rapid flowing, wide and shallow river with an average depth of 0.5 m, clear water, rocky bottom and large amounts of submerged vegetation. Feeds on larvae of Diptera (Chironomidae, Simuliidae) and nymphs of Ephemeroptera (Ref. 93814).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ferrer, J. and L.R. Malabarba, 2013. Taxonomic review of the genus Trichomycterus Valenciennes (Siluriformes: Trichomycteridae) from the laguna dos Patos system, Southern Brazil. Neotrop. Ichthyol. 11(2):217-246. (Ref. 93814)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .