Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Siluriformes
(Catfishes) > Trichomycteridae
(Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); pirabitira: The specific name Pirabitira, from the Tupi, is a contraction of pira (fish), and ybytyra (mountain).
This is in reference to the peculiar habit of species of the genus Trichomycterus, which usually inhabit mountainous regions.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; depth range - m (Ref. ), usually - m (Ref. ). Tropical; 0°C -
South America: tributaries of the upper rio Grande, rio Paraná basin, southeastern Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 7.7 cm SL male/unsexed; (Ref. 118200)
Morphology | Morphometrics
soft rays: 10;
Vertebrae: 37 - 38. Distinguished by having the following combination of characters: opercular odontodes obliquely arranged); long pointed process on the posterodorsal tip of the hyomandibula; morphology of the metapterygoid narrow, without conspicuous process directed to the hyomandibula; caudal fin subtruncated; 7 - 8 branchiostegal rays; pelvic-fin origin in a vertical through the centrum of 18th or 19th vertebra; 37-38 vertebrae; 32-34 interopercular odontodes; narrow stripe along lateral midline; nasal barbel reaching middle of the pectoral-fin base; presence of the two anterior pores of infraorbital series; head length 18.7 - 20.8% SL; seven pectoral-fin rays; 14 -15 ribs; pelvic-fin insertion through 18th-19th vertebrae; dorsal-fin and anal-fin origin in the vertical through 20th- 21st, 24th-25th vertebrae; body width 6.4 -9.3% SL; dorsal-fin origin posterior to pelvic-fin insertion (Ref. 92859).
Inhabits streams with clear water and muddy substrate comprising of submerged litter (Ref. 92859).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Barbosa, M.A. and V.M. Azevedo-Santos, 2012. A new species of the catfish genus Trichomycterus (Teleostei: Siluriformes: Trichomycteridae) from the rio Paraná basin, southeastern Brazil. Verteb. Zool. 62(3):357-362. (Ref. 92859)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00603 (0.00252 - 0.01440), b=3.06 (2.85 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.4 se; based on size and trophs of closest relatives
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .