As the video says, is a Reservoir in the southeast of Brazil, wich means theyre introduced and its not their natural habitat.
''Cichla piquiti , new species, is restricted to the Tocantins river basin, but transplanted in the Paraná river basin in Brazil
and Paraguay'' (Kullander, 2006)
''Cichla kelberi, new species, is restricted to the Tocantins river basin, but also found transplanted
in the Paraná and Paraíba do Sul river drainages and reported from the Nordeste region of Brazil.'' (Kullander, 2006)
But yes, they do live together, and I was speaking with a guy wich worked with then In a reservoir, he said me that kels and azullies have high level of hybridization between themselves.