I have two albino catfish that I have had for about a year. Three weeks ago while I was on vacation my roommate saw one of my catfish eating one of my peacocks. I assumed that the fish was dead prior to consumption. Last night I added three new peacocks to my 75g tank. This morning 2 of the three were missing. Both of my catfish have protruding abdomens. Are catfish supposed to eat live fish? Is there a catfish that I can buy that will stay reasonably sized. Both of these have grown over 6 inches. I am going to remove these catfish and put them in my koi pond outside.