id believe they are fry munchers, especially due to their size some are about 5inch or so. but i prefer to seperate them for a couple of months until they put on abit of size, then occasionally let them run the guantlet. i used to put them in my tropheus tank but i have to strip the entire tank to get the fry out when i want them(which i hate doing) so i just stick them into a breeding trap or a small tank if i have room