Astyanax sp.

Distribution.

Upper rio Santo Antônio, rio Doce basin.

Diagnosis.

Astyanax sp. differs from A. lacustris by having teeth in maxillary bone; conspicuous humeral spot vertically oriented; hyaline fins slightly reddish. It is also diagnosed by having teeth tetracuspidate to heptacuspidate in the inner series of premaxillary bone forming a notch; dentary teeth decreasing abruptly in size from fourth tooth; 6.5 scales above the lateral line; iii+19 or 20 anal fin rays.

Remarks.

In this study, we refer Astyanax sp. such as putative new species from the study area, due to differences in morphology and color pattern between this species and another from Southeastern Brazil river basins such as A. microschemos and A. turmalinensis .