Pues eso, Costa ha descubierto una nueva especie de Rivulus en Brasil y esto es lo poco que sé de momento:
"Anablepsoides urubuiensis, new species, is described from the upper Urubu river drainage, northern Brazil. It constitutes the first record of a species of the A. limoncochae group for the central Amazon region. The new species is distinguished from all other rivulines by a unique colour pattern of flank, including the presence of two red stripes distinctively widened in their posterior portion; it also differs from the other congeners of the A. limoncochae group by a combination of caudal fin oval, absence of light yellow or light orange stripe on the distal margin
of the anal fin in males, and dorsal fin placed in a vertical through the base between the last two anal-fin rays or posterior to it".
Saludos,
Juan Pablo