Pencil catfish
Trichomycterus alterus (Marini, Nichols & La Monte, 1933)
Also calledBagre de torrente (spa)
Descriptions from checklists and floras indexed by GBIF
materials_examined
Material examined. 10 exemplars; 32.5 - 34.6 mm SL. CI FML 7841, 4 ex, 27 ° 19 ’ 07.5 ” S, 65 ° 41 ’ 51.2 ” W Jaya River. CL FML 7843, 3 ex, 27 ° 19 ’ 07.5 ” S, 65 ° 41 ’ 51.2 ” W Jaya River. Cl FML 7942, 2 ex, 27 ° 12 ’ 36.21 ” S; 65 ° 37 ’ 22.80 ” W Pueblo Viejo River. Cl FML 7943, 1 ex, 27 ° 17 ’ 39.8 ” S, 65 ° 51 ’ 02.0 ” W Jaya River. Identification. Lack of a thick, rugose layer of fatty tissue on body and head; small or not visible body papillae; approximately triangular head shape in dorsal view; operculum and interoperculum with odontodes directed towards posterior region; without mentonian barbels; without adipose fin; first pectoral-fin ray as a distinct filament; 12 principal caudal-fin rays and distal margin concave; unpigmented region on the body anteroventral region to dorsal-fin origin, white dots at origin and end of dorsal-fin base (Fernández and Vari, 2002; Fernández et al., 2017).
Do we know what we are conserving? Fishes from Parque Nacional Aconquija, Tucumán, Northwestern Argentina
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Every page naming Trichomycterus alterus in the Biodiversity Heritage Library →
From the GBIF Backbone Taxonomy and occurrence records (GBIF.org), with Wikipedia and the Source Library. GBIF species 2343116.