Hypostomus affinis ( Steindachner, 1877a )

de Brito, Victor & Buckup, Paulo Andreas, 2019, The fish fauna of the upper Piraí drainage, a transposed mountain river system in southeastern, Brazil, Check List 15 (1), pp. 235-247 : 241

Hypostomus affinis ( Steindachner, 1877a)

Figure 4E

Geographic distribution: Paraíba do Sul and Doce river basins and coastal rivers of southeastern Brazil.

Diagnosis: Individuals of Hypostomus affinis can be distinguished H. luetkeni by the presence of 1 main postsupraoccipital plate and 4 lateral ridges on flanks ( Mazzoni et al. 1994). The prevailing pigmentation pattern in adults of H. affinis comprises numerous black spots, whereas H. luetkeni has a more uniform dark pigmentation pattern.