In nature dovii often eat other species of cichlids, and once grown, could esentially eat any cichlid endemic in their natural habitat.
Of course there are other similar size new world cichlids, such as Cichla, or umbis, but they are not endemic to dovii habitat, and prefer different water parameters.(lower pH and softer water)
Along with some of the large catfish mentioned aove
Fish large enough not to be eaten, but are endemic would be the
adult Brycon guatemalensus (the Machaca )

above and below are juvies


some of the sleeper gobies such as Gobiomorus dormitor

above and below a juvie I have

They can reach 36¨(over 90 cms)
And some of the Centropomus species (aka snook)

Above, a juvie I caught and kept temporarily
Below an average sized adult from Central Ameican lakes, and often eaten here
