I'm looking for a type of small fish that eats green hair algae,I have ottos but they don't much care for it,I have tried Excel @ x2 & x3 the recommended dose and have had no luck getting rid of it,I'm having this problem in my tank with breeding Red Cherry Shrimp and do not want to try any chemicals,The only thing that I have found to do is go through every day with a toothbrush and pick it out what a PAIN,Any Suggestion would be great Thanks