my guess would b the pleco is eatn the bichirs slime coat causen the light patches and disease in ur bichirs i bet if u pull the pleco from the 230g the bichirs would b fine in theretman;3393328; said:Well I took out the harlequin and put in the red tail so we will see if another bichir shows any signs of stress then I guess the vampire pleco gets the boot.
Well after I pulled the harlequin shark and put him in the 450 gallon he started to suck on the side of my black arowanas and they are about 18 inches long. Talked about nervy!! Here is the culprit: