TetranematichthysTetranematichthys is a genus of driftwood catfishes found in tropical South America.SpeciesThere are currently three described species in this genus.Tetranematichthys barthemi L. A. W. Peixoto & Wosiacki, 2010Tetranematichthys quadrifilis Tetranematichthys wallacei Vari & Ferraris, 2006