Author: Soares, Bertaco, Ito & Zuanon, 2017
Comments: Occurs in small upland forest streams with 1.1-2.7 m width, 0.07-0.33 m depth, and 0.20-0.42 m/s) current velocity draining to both margins of the rio Japurá.  The streams are characterized by the following: clear to yellowish; acidic (pH <6.6); cool (23.8-25.3°C); well oxygenated water (3.49-7.8 mg/l); low electrical conductivity (<33.3 μS/cm), almost completely shaded by the forest canopy; and channel substrate mainly consisted of white silica sand and pebbles, with interspersed litter banks. Occurs in the streams together with other fishes such as characids <i>Bario steindachneri</i>,
  <i>Bryconella pallidifrons</i>, <i>Hemigrammus bellottii</i>, <i>H. marginatus</i>, <i>Knodus orteguasae</i>, <i>Moenkhausia agnesae</i>, <i>Tyttocharax madeirae</i>; lebiasinid <i>Pyrrhulina semifasciata</i>; heptapterid <i>Nannoglanis fasciatus</i>, and <i>Myoglanis koepckei</i>; cetopsids <i>Denticetopsis seducta</i>, and <i>Helogenes marmoratus</i>; rhamphichthyid knifefish <i>Gymnorhamphichthys rondoni</i>, and some cichlids <i>Aequidens pallidus</i>, and <i>Bujurquina cf. robusta</i> (Ref. 118101).