Seems like he's getting bigger every day. I can always tell when he's hungry, he'll start swimming toward the clams before they hit the bottom.
I went to my parents home a couple of weeks ago and snagged a few giant pickle jars full of clams from their pond. I've been sticking them in other tanks so the puffer doesn't make a pig of himself. I put some in with my oscars, and they apparently figured out that when the clams stick their "tongues" out, they make an easy and tasty snack! I came downstairs and saw about 10 empty clam shells and figured I should probably move them. It's funny, because the only other species that figured this out was some Chilotilapia Rhoadesii.