I had an algea eater (plecostomas?? something like that) in the tank, he's about 2" in length. My eel seemed to be attacking him, really tearing him up, though it was in a castle so we couldn't see exactly what went on. The eel is nearly a foot long, as a guess. Did I see it wrong, is the algea eater not safe? I've taken him out for now,back in fish tank. Should I just get a bigger one? Also, what are the chances that the eel would eat a much smaller peacock eel or 2 if I added them to his tank(30 gal., lots or rocks,sand,& plants, feeder fish&ghost shrimp)?