5 months. He was arguably a juvenile though: a 2008 het pied male that stopped eating from November 2009 until April 2010. Went from close to 1000 grams to 600 and change. On the bright side, he also stopped biting ME at that point, too...
(He's healthy and happy now, and back up to 1200 grams or so. And he hasn't gone back to his bitey ways, though we still call him Mr. Nibbles.)