Alright so I can give a quik run down. I have a male and female green terror (pair) male is 4.5 inches female is 3, 7 inch pleco, 6 inch (belly crawler) pike in a 55 gallon and there ready to go up to a larger tank. I'm getting a 150 in a few weeks and was wandering if anyone has ever tried to put silver dollars with these fish? The silver dollares will be red hooks and I will get 6 of them. I do big, frequent water changes and tests on all my tanks. I monitor and adjust my levels like a nazi. I just have never tried to keep non cichlids with cichlids. I hear its possible but want a few opinions before I do it. My G/T pair are very mild and when they had ther last clutch there were 4 firemouths with them and the fire mouths never even got tatered fins. They still defended there teritory but were not outwardly aggresive. So what do you guys think? Thanks.