Description:
This is a large genus with over 100 species described.
Trichomycteridae is a monophyletic group composed
of eight subfamilies, 41 genera and approximately
207 species (Ferraris 2007). Seven subfamilies are
demonstrably monophyletic groups, but Trichomycterinae
is the largest and clearly a polyphyletic group of
Trichomycteridae (Wosiacki 2002). The Trichomycterus
genus, touted as not monophyletic (de Pinna 1989),
is the richest and most widely distributed of Trichomycteridae
family, with 113 valid species spread throughout South
and Central America, on both sides of the Andes (de
Pinna and Wosiacki 2003, Ferraris 2007). A considerable
diversity of Trichomycterus species occurs
in the hydrographic basins of South and Southeast
of Brazil. In these regions 34 species (Bockman et
al. 2004) have been described. Habitat:
Occurs in creeks with rocky substrates swept by a
strong current. Diet: Will feed on
most aquarium fare such as tablet, frozen and live
foods. Etymology: The specific name
guianensis: –ensis, Latin suffix denoting
place: Guyana, referring to type locality, Aruataima
Falls, upper Potaro River. Remarks:
Still found on some online sources as Trichomycterus
guianense.
Common
Name:
None
Synonyms:
Pygidium guianensis
Family:
Trichomycteridae
Distribution:
South America: Rivers of the Guianas and Venezuela. Type
locality: Aruataima Falls, Upper Potaro,
British Guiana.
Trichomycterus
guianensis Upper Potaro River, Guyana
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