There's a gold chinese algae eater, similar to the one in the picture at the local Tropical Smoothie Cafe. He's very pretty, but even though he's got plenty of space in the 200+ gallon tank, he'll still go after the other algae eaters. At full growth they can be agressive (not cichlid agressive, but still agressive). Just fair warning.
Edit: This one's about 6-8 inches long and as thick as my thumb.