My Nile monitor i purchased on Sunday, the first day i had him home he ate two horn worms. Since then he has not eaten, i have left two in the room in hopes that he would eat them. I also left a guppy in his tank in case he prefers to eat fish instead. The temperature is normally about 80 degrees and humidity is about 60%. I am keeping him in a zilla 20 gallon long (hes really small, at least two times his size in length) and his bedding is wood chips about 2 inches deep. Any help is much appreciated!