Okay, I have this tank for a while, and my fish come and go. But, I love my oscars and other fish seem to have problems with them. I went to the petstore and I asked what fish go with oscars I got 3 parrot fish, a JD, a pacu, and a black convict (My old tank was 225 gal). so the next day the I started noticing the JD wouldn't let the oscar eat so I was just a bit bewildered. Then, within the next few days the oscar looked sick and I move the JD out. Then later on that oscar died. so I got another one then the pacu and convict started to kill them too so I got another oscar and another and another so, I am just like get rid of these other fish. so they are in a whole other tank. now I have a an oscar in the tank with 3 parrots and they are doing just fine. then I went to another petstore and they said none of the fish belonged in that tank. then I was like what!?!?!?! Next, I went to another petstore and they said some of these can go, but the others can't. so, I just want to answers someone please! can any of these fish truely go with an oscar and if not what can?