Description:
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. Remarks:
T. immaculatus sports ventral armatures (odontodes)
along opercles that help it cling to rocky surfaces
(Sabaj, Mark Henry 2018).
Common
Name:
None
Synonyms:
Pygidium immaculatum
Family:
Trichomycteridae
Distribution:
South America: Paraíbuna River, Paraíba do
Sul River basin, Brazil. Type locality:
Juiz de Fora, Rio Parahybuna, Sao Matheos, Goyaz [Brazil].
Size:
9.5cm. (3¾ins)
Temp:
22-26°c (71-79°f.)
p.H.
6.0-7.0.
Reference:
Ferraris, C.J. Jr.,
2007. Checklist of catfishes, recent and fossil (Osteichthyes:
Siluriformes), and catalogue of siluriform primary
types. Zootaxa 1418:1-628. Froese, R. and D. Pauly. Editors.
2019. FishBase. World Wide Web electronic publication.
www.fishbase.org, ( 01/2019 ). Burgess, W.E., 1989. An atlas of
freshwater and marine catfishes. A preliminary survey
of the Siluriformes. T.F.H. Publications, Inc., Neptune
City, New Jersey (USA). 784 p. Sabaj, Mark Henry; FB page 2018.
Trichomycterus immaculatus Rio Piracicaba, São Paulo state southeastern
Brazil
Trichomycterus
immaculatus Head view-Rio Piracicaba,
São Paulo state southeastern Brazil
Trichomycterus
immaculatus Ventral view-Rio Piracicaba,
São Paulo state southeastern Brazil
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