All my fish in my main tank LOVE convicts as dinner! Only I grow them out so they get a worthwhile meal... Convicts are a great healthy food as they will be disease free(if you keep disease free tanks) and you can feed them healthy so when eaten, they will be healthy for your other fish. So much better than comets. But ya, your rams might have some problem catching them. My fish only catch them because I throw in 50 at a time at sub adult size so by the chances of probability, they eat lol.
BTW, whomever thinks it's unethical to feed live foods, go to your PETA meeting and leave us naturalists alone. Convicts are eaten ALL THE TIME in nature.