So I had one C. Pleurophthalma, about 4 inches. I decided that I wanted to give the little guy company so I added two more, about 3 inches each. The next morning, the two new additions were dead. The day after that I find my original fish dead. How is this possible? I figured the first two died for aggression reasons (though i thought they were supposed to be ok in groups) but the other guy too. Does anyone have any ideas or experiences. Are these guys known to just croak for no reason at all? Dont know when Ill come by these beautys again...