Forte do São Joaquim, Rio Branco, Roraima, Brazil.
Often placed with S. scutata and S. candei in separate genus Poecilurus, but no diagnosable differences from current genus. Genetic data#R show present species is sister to a clade formed by S. candei and S. erythrothorax. Monotypic.
N Brazil in upper R Branco tributaries of N Roraima and adjacent Guyana#R.
Food and feeding
Status and conservation
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