I'm looking for a single, large male cichlid to keep as a "wet pet" in a 75 gallon tank. But the problem is, I have no idea what kind I should get! But I do know that I want an aggressive cichlid with lots of personality. Right now, my top 3 choices are as follows: a Green Terror, a Red Tiger Motaguense, or a Haitian/Black Nasty. Can you recommend anything else? I don't want a cichlid that develops a really big nuchal hump, though-I just think it looks unattractive.