I am kind of new to this and only have had my 18x18x18 tank for about 2 weeks. I only have 1 RETF right now. He is dark green most of the time with a lot of the top of his head lime green dots. There was a very long thread some time ago that had the same problem. I don't know how to get pictures up here i know that would help a alot. I use a fogger for humidity which is around 80 to 85 all the time and temp ranges from 75 at night to about 80 during the day. I stopped feeding him for 3 days because he looked bloated so i wasn't sure if he was backed up or not. Whatever it was his belly basically went back to normal. The only concern that i have is he is awake sometimes during the day and sometimes at night he is sleeping but not the whole time on either or. I fed him last night a cricket with tweasers and he ate it. Not sure if he could food on his own when i tried feeding him again. He possibly went 5 days with no food. His belly looks fat again. Any tips would be appreciated.