so i was looking at some fish in my lfs the other day and they were telling me some stuff about my fish that i wanted to come to you guys to verify. i currently have a 55g setup with a jaguar, a texas, a green terror, 2 silver dollars and a hi-fin spotted pleco. now they were telling me that my jag will end up getting 2-3 foot long, i mean knew he would get big, but i didn't think that big, how big will he get? also would these fish be able to coexist, as i plan to get either a 125 or 180 in the future, or will i actually have to get a 180 just for the jag and a 125 for everyone else?