Classification / Names
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Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); sketi: Named in honor of Boris Sket..
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce benthopélagique. Tropical; 7°N - 6°N, 73°W - 74°W
South America: Columbia. Departamento de Santander, Municipio La Paz, vereda Casas Blancas, Cueva del Indio (73º05’18”W, 6º50’21”N, elevation 2157 m), upper Opón river basin, Magdalena river system (Ref. 87778).
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 6.2 cm SL mâle / non sexé; (Ref. 87778)
Description synthétique
Morphologie | Morphométrie
This species is distinguished from both epigean and cave restricted species of the genus by having the posterior fontanel divided into two widely separated opening; anterior opening with triangular shape pointed posteriorly; and, posterior opening with triangular or sub-conical to circular shape, the former pointed anteriorly. The following set of characters useful for identification and shared with other species of Trichomycterus include: relatively deep head (45.6-54.1% of HL); narrow mouth (39.3-45.3% of HL); longer nasal, maxillary and rictal barbels (71.4-95.3%, 89.3-112.8% and 50.8-64.1% of HL, respectively), tip of maxillary barbel surpassing pectoral-fin origin; opercular odontodes 10-14; posteriormost branchiostegal rays considerably longer than anterior ones; tip of first pectoral ray prolonged as medium length filament (44.9-55.6% of pectoral-fin length); pelvic-fin origin anterior to vertical through dorsal-fin origin, pelvic fin covering urogenital papilla but not reaching origin of anal fin; obliquely rounded caudal fin, its upper portion slightly longer than lower portion; body color pattern plain dark-gray without spots (Ref. 87778).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Castellanos-Morales, C.A., 2010. Trichomycterus sketi: a new species of subterranean catfish (Siluriformes: Trichomycteridae) from the Andean Cordillera of Colombia. Biota Colombiana 11(1-2):33-41. (Ref. 87778)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
Plus d'informations
Noms communsSynonymesMétabolismePrédateursÉcotoxicologieReproductionMaturitéFraiRassemblement de ponteFéconditéŒufsDéveloppement de l'œuf
Taille/ÂgeCroissanceLongueur-poidsLongueur-longueurFréquences de longueursMorphométrieMorphologieLarvesDynamique des populations larvairesRecrutementAbondanceBRUVS
RéférencesAquacultureProfil d'aquacultureSouchesGénétiqueElectrophoresesHéritabilitéPathologiesTraitementNutrientsMass conversion
CollaborateursImagesStamps, Coins Misc.SonsCiguateraVitesseType de nageSurface branchialeOtolithesCerveauxVision
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00355 - 0.02043), b=2.93 (2.74 - 3.12), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
