Very nice eels, do you have any aggresion problems as many would say large mastacembelus eels can not be kept together i have had sucess in keeping them together and its nice to see others who have done so as well.
What do you feed them by the way? They seem to be very docile eaters. I myself have a 16" and I have never seen it eat anything. I've had it for a month.
I give him earthworm's ,maggot's ,beef heart and occasionaly prawn's .I moved the cory's cos they were being nipped not sure what by but could have been the fire.