I have had a well established cichlid tank for a while, with a mother and four cichlid fry and a pleco. A few days ago I noticed my largest cichlid picking on the pleco, and I found him dead a day later. I was planning on replacing the pleco with a new one, but now I'm wondering if anyone has any suggestions for a better algae eater, or if I should stick with what I had. I have a 50 gallon tank. Thanks.