| first record of blackfin pearlfish <i>austrolebias</i> <i>nigripinnis</i> (regan, 1912 (cyprinodontiformes, cynolebiidae) from brazil. | austrolebias costa is a genus of annual fish inhabiting temporary wetlands in the chaco-pampasic region of southern brazil, uruguay, paraguay, bolivia and argentina (costa, 2006, nielsen & pillet, 2015, alonso et al., 2016). currently, about 45 species of austrolebias are known (costa, 2006, volcan et al., 2014, nielsen & pillet, 2015), and of these, 24 occur in rio grande do sul, the southernmost state of brazil, distributed across the rio uruguay basin and the patos-mirim lagoon system and adj ... | 2017 | 28609966 |