Excellent read as well. It goes to show you that despite the aggression that Cichla exhibit in reagrds to feeding, they are less hardy in general...and easily dominated by other, more aggressive fishes...like in this case the LMB.
Also, the study shows how important DO is to Cichla, as well as temperature. The fact that Cichla have a narrower range of tolerance to these two parameters compared to the LMB shows that clearly the Cichla have no chance.
Yet, in Florida, the Cichla have established themselves quite nicely in the presence of native LMB populations. Perhaps it's the fact that LMB are essentially non-specialized carnivores compared to Cichla, which are specialized carnivores (in this case piscivores).
Great stuff, EWURM.