Well... I first got into aquariums 2 years ago and last week, I realized a mistake that I have made. I bought a common pleco thinking it was a BN Pleco. It is only 5" in size but will quickly out grow my 55 gallon tank. I am looking at selling him to one of my LFS and getting another algae eater. I was looking at Oto's but am not sure how many would be a good grouping for my tank as it is relatively low stocked right now and will be getting some plants in a week or 2. I will be getting some Angel's in 2-3 months, after the tank has plants in it. I have also read up on Oto's at www.planetcatfish.com and it did not give a grouping size. Any information would be helpful and also any other suggestions would be nice too. I would like to stay on the smaller side of fish as my largest fish in my tank right now are my loaches.