A new small Loricariidae, Hypostomus careopinnatus, is described from the Rio Taquari
drainage, upper Rio Paraguay basin, Mato Grosso, Brazil. The new species can be easily
distinguished from all congeners, except Hypostomus levis, by the absence of adipose fin.
Hypostomus careopinnatus is distinguished from H. levis mainly by the presence of slender
bifid teeth, with mesial cusp large and rounded, and lateral cusp small and pointed (vs.
spoon-shaped teeth). The new species described herein completely lacks the adipose fin …