I'm planning a community tank full of large fish and am looking for suggestions. The tank will be acrylic with dimensions of either 8x4x2.5 or 12x4x2.5. So far I'm thinking a red belly pacu, a shoal of 5-7 tinfoils, and /or maybe a giant gourami. I want omnivores/scavengers that will eat pellets etc. Ideally between 1-2' long. I'm looking to avoid highly aggressive fish such as dovi, umbee etc. unless they will be compatible with the above. What other fish should I consider that meet this criteria?