('Olivaichthys mesembrinus',((('Helogenes marmoratus','Helogenes castaneus'),(('Cetopsidium orientale',('Cetopsidium ferreirai','Cetopsidium morenoi',('Cetopsidium pemon','Cetopsidium sp.'))),(('Denticetopsis sauli',('Denticetopsis macilenta',('Denticetopsis seducta',('Denticetopsis epa','Denticetopsis praecox')))),(('Paracetopsis bleekeri','Paracetopsis esmeraldas'),(('Cetopsis amphiloxa',('Cetopsis motatanensis',('Cetopsis baudoensis',('Cetopsis fimbriata',('Cetopsis oliveirai',('Cetopsis candiru','Cetopsis coecutiens')))))),('Cetopsis othonops',('Cetopsis pearsoni',('Cetopsis plumbea','Cetopsis sandrae',('Cetopsis montana',('Cetopsis orinoco',('Cetopsis arcana','Cetopsis gobioides'))))))))))),('Nematogenys inermis',('Austroglanis barnardi',('Noturus flavus',('Bagrus bayad','Pimelodus ornatus')))))); ('Olivaichthys mesembrinus',(('Nematogenys inermis',('Austroglanis barnardi',('Noturus flavus',('Bagrus bayad','Pimelodus ornatus')))),(('Helogenes marmoratus','Helogenes castaneus'),(('Cetopsidium ferreirai',('Cetopsidium orientale','Cetopsidium morenoi',('Cetopsidium pemon','Cetopsidium sp.'))),((('Paracetopsis bleekeri','Paracetopsis esmeraldas'),(('Cetopsis amphiloxa',('Cetopsis motatanensis',('Cetopsis baudoensis',('Cetopsis fimbriata',('Cetopsis oliveirai',('Cetopsis candiru','Cetopsis coecutiens')))))),('Cetopsis othonops',('Cetopsis pearsoni',('Cetopsis plumbea','Cetopsis sandrae',('Cetopsis montana',('Cetopsis orinoco',('Cetopsis arcana','Cetopsis gobioides')))))))),('Denticetopsis sauli',('Denticetopsis macilenta',('Denticetopsis seducta',('Denticetopsis praecox','Denticetopsis epa'))))))))); ('Olivaichthys mesembrinus',(('Nematogenys inermis',('Austroglanis barnardi',('Noturus flavus',('Bagrus bayad','Pimelodus ornatus')))),(('Helogenes marmoratus','Helogenes castaneus'),(('Cetopsidium ferreirai','Cetopsidium morenoi','Cetopsidium orientale',('Cetopsidium pemon','Cetopsidium sp.')),(('Denticetopsis sauli',('Denticetopsis macilenta',('Denticetopsis seducta',('Denticetopsis epa','Denticetopsis praecox')))),(('Paracetopsis bleekeri','Paracetopsis esmeraldas'),(('Cetopsis amphiloxa',('Cetopsis motatanensis',('Cetopsis baudoensis',('Cetopsis fimbriata',('Cetopsis oliveirai',('Cetopsis candiru','Cetopsis coecutiens')))))),('Cetopsis othonops',('Cetopsis pearsoni',('Cetopsis sandrae','Cetopsis plumbea',('Cetopsis montana',('Cetopsis orinoco',('Cetopsis arcana','Cetopsis gobioides')))))))))))));