cichlid_8810;4655625; said:It is not about size or power with Cichlids it seems to be more about confidence - I have seen little tiny cichlids that wouldnt even be capable of jaw locking another cichlid but have been chasing others much much bigger than them.
9/10 a Dovii will be to much for a JD but you never know - your JD may retain its early confidence and always be dominant over the Dovii. It could happen you never know, in theory it won't happen but there is always a chance.
It really is to do with confidence - look at breeding pairs how aggressive they become when protecting their fry. My pair of JD's would easily be able to drive off an RD with that kind of aggression - brought about by adrenaline and confidence. But normally they would just lack confidence in doing that.
You would be surprized My smaller dovii's was cornered in the tank from the dempsey so he turned around and nailed the dempsey in the eye. the dempsey is fine but still is chasing. the larger dovii is actually flaring at the dempsey more often I have a feeling there will be a big fight!!!