Author: (Sarmento-Soares, Cabeceira, Carvalho, Zuanon & Akama, 2013)
Comments: Found in 1st and 2nd order streams, with 1.22 to 3.16 m in width and 0.17 to 0.72 m in depth, characterized by clear water and slow current  that varies from 0.15 to 0.36 cm/s, over sand bottom with litter,  and riparian surrounding vegetation.  Collected under trunks and principally inset somewhat compressed submerged litter banks.  Nocturnal.  Feeds on small fish (<i>Moenkhausia phaeonota</i>, Characidae), shrimps, aquatic insect larvae and nymphs, fragments of terrestrial arthropods (ants, spiders), seeds and particulate organic matter.  Syntopic with <i>Astyanax sp., <i>Bryconops</i> spp., <i>Knodus heteresthes</i>, <i>Moenkhausia</i> spp., <i>Erythrinus erythrinus</i>, <i>Hoplerythrinus unitaeniatus</i>, <i>Rivulus kayabi</i>, <i>Gymnotus aff. carapo</i>, <i>Gymnorhamphichthys petiti</i>, <i>Eigenmannia aff. trilineata</i>, <i>Aequidens</i> sp., <i>Crenicichla inpa</i>, <i>Tatia strigata</i>, <i>Tatia neivai</i>, <i>Helogenes marmoratus</i>, <i>Cetopsis sandrae</i>, small  unidentified cetopsid, <i>Hisonotus</i> spp., <i>Cetopsorhamdia</i> sp., <i>Imparfinis aff. stictonotus</i>, <i>Phenacorhamdia somnians</i>, <i>Rhamdia  quellen</i>, <i>Ituglanis aff. amazonicus</i>, and <i>Synbranchus</i> sp. (Ref. 94696).