Wow thank you so much for the help guys, that's exactly what I needed to know. It looks like I've been going about this all wrong and seriously underfeeding my pacu in the process. The other fish all look fat after eating so I'm pretty sure they're getting enough, but the pacu is 5x bigger than any of my previous fish so this is kinda new to me. Leonardo sounds way too familiar but there's nobody around to hold mine back so I feed the other side while she's eating. The fh gets the first mouthful before the pacu pushes him out of the way, and then the catfish and pacu siphon the sand while I sneak the fh another handful lol. Feeding the pacu first with bigger chunks of food makes a lot more sense tho (and the fh wont touch bananas) so I'm thinking about either buying the 3mm nls in bulk and stuffing fruits/veggies/shrimp for the pacu, or using 10mm to make my own food and breaking it up into different sizes for each tank. What all do you mix into those squares Pacu Mom? And do you think smaller fish would make a mess out of them?