cichilid

We have a 55 gallon fish tank with four BP in it currently. We also have a JD in a 30 gallon tank. I was wondering if we could move the JD into the 55 gallon tank without any issues. The JD is about 6 inches and the the four BP are around 4-5 inches. Thanks for the help.

I have a 180litre tank that I have a ran for a couple of years now and fancy a change, I was told I could maybe over stock a mbuna tank or look at a lake tang tank. I’m looking for a tank full of personality but preferably not a single fish tank? Happy to consider non-cichlids too and any help...