I bought two pacu's about a month ago and they were very small. I started to notice that they were growing at a very fast rate at least a few inches since ive had them so I looked them up on the web and found out how big they can get and how fast. I really wish the people at petco would have told me because I only have a 30 gallon tank but I have grown to like them very much they are a really cool fish they will eat just about anything even some of the other smaller fish that were in my tank sadly. Anyway I still want to keep these fish I have already priced a 55 gallon tank at a pretty good price. I would like to put the pacus in there. I am wondering if a 55 gallon tank would it be good enough for at least a year untill I can find something bigger? If you don't think that they would be okay in than I will have to get rid of them because they will outgrow this tank in a couple months I have owned big fish before and i'm not going to keep them in the tank I have now. If anybody knows about pacu's please give me your input on this situation, thanks.