I dont know if its a Cichlid or not, but in my tank, and still no one believes me on this one, the meanest fish I have are my 2 Loachs, the Bengal (As I saw it named at my LFS) and my Clown. The Clown is the smaller of the duo, but the meanest. Weighing in at only 1 inch, today I watched it chase my school of Neons around the tank for a good 2 minuets, than move on to my Blue Zebra Danio's, before going for a nice jog with one of my Dalmation Molly's.
The Bengal, isn't all that agressive, but seems to have a temper, it thinks it owns one of my pieces of drift wood, and he defends his castle, has chased every fish in my tank, including the Pl*co off of it.
Now than again, thats in my tank, I am sure my little Clown Loach would be nothing more than a light snack for most fish.
If anyone wants an over aggressive, unshy, and very ballsy Clown Loach!
Tyler