I have a 75g setup with a snowflake eel, striped burrfish, and a small spotted hawkfish (about 2.5 inches). Am I able to add any more fish to the tank, or am I pretty much maxed? If I can add more, what are my options? I think a couple blue damsels, a cleaner wrasse, or maybe even a fuzzy dwarf would be cool, but I don't want cramped fish. Thanks in advance!