Boulengerochromis microlepis (Tanganyikan emperor cichlid)
..... argubly the largest cichlid in the world. Reported to get some 3foot long.
...... comes from Lake Tanganyika, Africa.
There's actually a tank full of these fellas (sub adult) in Xian Leng (Shah Alam) display aquaria at the back.

http://www.sci.osaka-cu.ac.jp/biol/a...microlepis.jpg