Hisonotus notatus

Hisonotus notatus is a species of catfish in the family Loricariidae. It is a freshwater species native to Brazil, where it occurs in the São [João River (Rio de Janeiro)|São João River] and other coastal drainages of the state of Rio de [Janeiro (state)|Rio de Janeiro]. It reaches SL and is the type species of the genus Hisonotus. It was formerly considered conspecific with Hisonotus thayeri, but a 2016 revision by Fernanda Martins and Francisco Langeani redescribed H. notatus and adopted the new name H. thayeri to some populations formerly classified as H. notatus.