Hi.
That's a sick Dovii deffo a mean b*st*rd, hahahaha, I think a fish like yours is the dream of many fishkeepers who like predatory species the most. I have at this moment 4 jags, one couple who have spawned and two males in separated setups of course, I hope my jags become half the exiting your fish is.
Just a comment: Why do you feed such a monster fish with such tiny pellets?, I think feeding that monster who is know as to be the most aggy cichild of them all with just tiny pellets equals to feed a tiger with dry cat food.
Im not saying you should practice life feeding him, I woudnt dare myself to throw some other fish or even mice to that monster and much less having children at home who could witness a possible carnage (maybe it is what your fish is asking for tho), however you could feed him frozen foods, I mean, something bigger and more exiting than just some tiny pellets.
My two cents.