Have a 10 gal with a 3" n. wennerae, he's bright green and great fun. About a week ago we found a bright solid one that looked alot like 'boomer' and was the same size - just a diff color. We decided to see if boomer would like a tankmate - obviously not! This morning we found the red one lying dead and partially eaten! It had to have been over territory as there was plenty of other food in the tank. Anyone had any success keeping two together?