Rivulus paresi
Costa, Wilson J. E. M., 2007
Rivulus bororo and R. paresi, two new killifishes from the upper Paraguay River basin, Brazil (Teleostei: Rivulidae)Abstract
Rivulus bororo, new species, from the Santana River drainage, and R. paresi, new species, from the Sepotuba River drainage, upper Paraguay River basin, central Brazil, are described. Both species are distinguished from the remaining congeners endemic to the Paraguay basin in having close red dots on flank, arranged in chevronlike series with the vertex on the mid-lateral line and red bars on caudal fin in males. Rivulus bororo is distinguished from all other species of Melanorivulus in having fewer mandibular neuromasts. It has similarities with R. violaceus from the upper Mortes River basin. Rivulus paresi differs from all other species of Melanorivulus by possessing a reticulate color pattern on the dorsal fin and the basal portion of the anal fin in males and a narrow basihyal.
Costa, Wilson J. E. M.
Ichthyological Exploration of Freshwaters 18(4), 351–357, 2007