Also, if there is very little hair algae, amano shrimp are great, so are red cherries. You could buy SAE's but they are hit and miss on species identification at local fish stores and even online. Plus, when you buy an SAE I would make sure your tank is big enough to supply him with algae of some sort on a constant basis. The shrimp can usually find plenty to eat in a tank, just by eating leftovers and diatoms. I would go with shrimp before I bought a fish to handle algae, or like it was said above, you need to find out why your having a problem with the algae, not just battle it with an algae eater. The algae will always win.