Description of Lamantichthys avacaneiro and Lamontichthys parakana by Carvalho Paixão and Toledo-Piza. Both species were found in Rio Tocantins. This locality is far away from the habitat of all other described Lamontichthys species.

Thanks a lot to Andrea de CARVALHO PAIXÃO for providing images of Lamantichthys avacaneiro, L. parakana and also L. maraceibero.