I.amazonicus (Steindachner, 1882
I.agreste Lima, Neves & Campos-Paiva, 2013
I.amphlipotamus Mendanca, Oyakawa & Wosiacki, 2018
I.apteryx Datovo, 2014
I.australis Datovo & de Pinna, 2014
I.bambui (Bichuette & Trajano, 2004)
I.boitata Ferrer, Donin & Malabarba, 2015
I.cahyensis (Sarmento-Soares, Martins-Pinheiro, Aranda & Chamon, 2006)
I.eichorniarum (Miranda Ribeiro, 1912)
I.epikarstictus (Bichuette & Trajano, 2004)
I.goya Datovo, Aquino & Thomas, 2016
I.gracillior (Eigenmann, 1912)
I.guayaberensis (Dahl, 1960)
I.herberti (Miranda Ribeiro, 1940)
I.ina Wosiacki, Durta & Mondonca, 2012
I.inusitatus Ferrer & Donin, 2017
I.laticeps (Kner, 1863)
I.macunaima (Datovo & Landim, 2005)
I.mambai (Bichuette & Trajano, 2008)
I.metae (Eigenmann, 1917)
I.nebulosus (de Pinna & Keith, 2003)
I.paraguassuensis (Campos-Paiva & Costa, 2007)
I.parahybae (Eigenmann, 1918)
I.parkoi (Miranda Ribeiro, 1944)
I.passensis (Fernбndez & Bichuette, 2002)
I.proops (Miranda Ribeiro, 1908)
I.ramiori (Bichuette & Trajano, 2004)
