I know he's about 300 grams and I've been driving myself crazy trying to figure out what size to get him.. The plastic pot I have is 7 inches in diameter.. I could cut it down even more( to about 5 1/2 inches wide) which would make it not as tall either.. (down to about 3 inches)I just don't know how long he is since He won't be shipped to me until next week .. To me, it seems like I could cut it down and be fine..