Okay I recently set up a 40gallon with the intention of getting a puffer but couldn't find the one I wanted and I'm impatient so I went to the lfs just to look around. I fell in love with a blue acara, did a bit of reading about him, and brought him home. Basically the tank is his, the worker that spent the most time with him said he was very aggressive so I doubt he'd tolerate any other mid swimming fish but I thought one of the smaller fancy plecos might make a nice tank mate for him. Anyone have any experience with this fish and how well they play with others? I usually keep puffers and brackish fish so he's my first cichlid. Thanks for any advice.