No, a different pair started in a 5.5 but there was to much aggression. I have 4 convicts, 2 firemouths, 1 female orangespot sunfish, and 4 senegals poly's in it. Now the 5.5, a 2.5, and a 10 gallon hex are open for fry. I'm determined to get some convicts out of this batch haha.