ML, about 6 weeks ago, I put a couple of tiny pacu in my minnow pond just for fun and curiousity. They already appear to weigh nearly a pound. They will eat as long as I stand there feeding them. Their growth rate seems to be world class. I also noticed that they are omnivores. I saw one hit a gambusia, and have also seen them hit floating junebugs and dragonfiles. I wish I could back off on the feed and see whether they feed on weeds, but I would have to starve the minnows too.