The peacock eel I vanished last time I saw it was tuseday no sign of it I cheked the floor inside the lid I even did a amonia test as I thought it might have died under the substrate . It just appeared this afternon and then disapeared again at lesat it is alive .I was worried that if it had died and I was unable to find it and the water could be contanimated and then loose more fish . The peacock eel seems more noturnal then the half banded eel I have as that omes out even when the lights are on