I orginally fed mine goldfish that was before I knew they were bad for them. I stopped when he got a severe case of ick from the goldfish so I brought him back from the brink of death and changed his diet to pelleted food. Hikari Bio-Gold is what he got. His colors improved greatly and so did his energy level which just helped him become even more territorial lol.
My uncle had came over and put his hand to the tank and my Jag was just like whatever. He told me he aint mean. I told him he doesn't go after hands but kept putting his hand and well he wouldn't go after it. Told my uncle to put his face to the tank then back up he did it and boom he hit the glass hard trying to get my uncle. Eyes were blood shot red. Of course we got his GF at the time to do the same except this time the Jag was close to the top of the tank and with his speed he made water splash out from the back of the tank. It scared the heck out of her. She left the room mad lol. But yeah I miss my Jag. Very interactive fish.
I have had Loisellei's and they don't seem to interact much. My Motag doesn't interact with me either unless it see's the food dropping into the tank. Even though I have a tank that could house one for its life span (135 gallon) I wouldn't buy another one. Or at least not anytime soon. Im trying to go the more peaceful route now. Starting to collect pleco's over cichlids. Love both species of fish but leaning more for the pleco's right now. I do own my RTM and 3 Freddy's still along with 2 different species of Thorichthys (6 of each). But yea wont be getting any more.