Since we put him in ISO yesterday he has been very active, eating and drinking both salt and fresh water. When he was in the main tank he stayed by himself in the corner. I'm wondering if he might be stocking up on saltwater for a molt, but I would think if he were gonna molt he wouldn't be this active. I don't know...any opinions? Jenny PS His picture is in the emergency forum...please look at it and tell me what you think.