Okay, I have a 180g with 2 Oscars (both about 10"), 2 JD's (probably 6" and 7"), 4 Tinfoil Barbs (about 4.5" each), and a common Pleco about 9". I have a 12" Pacu that is by himself right now in a 100g and I would like to move him into the 180g. Do you guys think this would work out? I don't think the Pacu would give the Oscars a hard time, but I'm concerned about the JD's and the Barbs since they are smaller. All of your input is appreciated. Thanks in advance.