Two new plecs from the Isbrueckerichthys genus have been described from the Rio Paranapanema basin in Brazil.
Brazilian scientists described the new catfish as Isbrueckerichthys saxicola and Isbrueckerichthys calvus in a paper in the latest issue of the journal Zootaxa.
Both species are found in the headwater streams of the Rio Tibagi, which feeds into the Rio Paranapanema basin in Parana State, Brazil.
These small plecs, which are members of the Neoplecostominae subfamily, reach up to 9cm/3", and live under rocks in fast-flowing streams and beneath waterfalls.
The Isbrueckerichthys genus was erected by Derijst in 1996 to include Pareiorhaphis duseni and P. alipionis after they were dislocated from the genus when it was synonymised with Hemipsilichthys.
The genus currently contains three other species: I. duseni, I. alipionis and I. epakmos.
For more information see the paper: Jerep FC, Shibatta OA, Pereira EL and OT Oyakawa (2006) - Two new species of Isbrueckerichthys Derijst, 1996 (Siluriformes: Loricariidae) from the rio Paranapanema basin, Brazil. Zootaxa, 1372: 53-68.